| All names | Abhóiséad | Recurvirostra avosetta |
| All names | Albatras Dú-Mhalach | Thalassarche melanophris |
| All names | Amadán Móinteach | Charadrius morinellus |
| All names | Amplóir | Phalacrocorax carbo |
| All names | Bairéadach | Cepphus grylle |
| All names | Banaltra na cuaiche | Anthus pratensis |
| All names | Beachadóir Eorpach | Merops apiaster |
| All names | Biorearrach | Anas acuta |
| All names | Bobóilinc | Dolichonyx oryzivorus |
| All names | Bonnán | Botaurus stellaris |
| All names | Bonnán Beag | Ixobrychus minutus |
| All names | Bonnán Meiriceánach | Botaurus lentiginosus |
| All names | Bráthair an dreóilin | Prunella modularis |
| All names | Breacán | Fringilla montifringilla |
| All names | Breacóg | Calidris alpina |
| All names | Brian na giolcaighe | Emberiza schoeniclus |
| All names | Bricín beatha | Fringilla coelebs |
| All names | Brionglán | Certhia familiaris |
| All names | Broigheall | Phalacrocorax carbo |
| All names | Broigheall Cluasach | Phalacrocorax auritus |
| All names | Bruachalán | Riparia riparia |
| All names | Buióg | Emberiza citrinella |
| All names | Buíóg | Emberiza citrinella |
| All names | Bultúr Gríofa | Gyps fulvus |
| All names | Bustard Beag | Tetrax tetrax |
| All names | Bustard Mór | Otis tarda |
| All names | Cabaire breac | Pica pica |
| All names | Cadhan | Branta bernicla |
| All names | Cadhan | Branta leucopsis |
| All names | Cág | Corvus monedula |
| All names | Cág Cosdearg | Pyrrhocorax pyrrhocorax |
| All names | Cág dheargchosach | Pyrrhocorax pyrrhocorax |
| All names | Caipín aitinn | Saxicola rubicola |
| All names | Caipín dhearg | Regulus regulus |
| All names | Caipín Dubh | Sylvia atricapilla |
| All names | Caislín Aitinn | Saxicola rubetra |
| All names | Caislín ceann-dubh | Saxicola rubicola |
| All names | Caislín cloch | Oenanthe oenanthe |
| All names | Caislín Cloch | Saxicola rubicola |
| All names | Caislín dearg | Saxicola rubicola |
| All names | Cam-Mhuin | Jynx torquilla |
| All names | Cánóg | Puffinus puffinus |
| All names | Cánóg Bhailéarach | Puffinus mauretanicus |
| All names | Cánóg Bheag | Puffinus assimilis |
| All names | Cánóg Cory | Calonectris diomedea |
| All names | Cánóg Dhorcha | Puffinus griseus |
| All names | Cánóg Dhubh | Puffinus puffinus |
| All names | Cánóg Mhór | Puffinus gravis |
| All names | Capall Coille | Tetrao urogallus |
| All names | Caróg Dhubh | Corvus corone |
| All names | Caróg Liath | Corvus cornix |
| All names | Casúr-fá-cloch | Oenanthe oenanthe |
| All names | Catéan Liath | Dumetella carolinensis |
| All names | Cathóg | Corvus monedula |
| All names | Ceann Cait | Asio otus |
| All names | Ceanndeargán | Phoenicurus phoenicurus |
| All names | Cearc Cheannann | Fulica atra |
| All names | Cearc Cheannann Mheiriceánach | Fulica americana |
| All names | Cearc coille | Phasianus colchicus |
| All names | Cearc Fhraoigh | Lagopus lagopus |
| All names | Cearc ghearr | Perdix perdix |
| All names | Cearc goirt | Coturnix coturnix |
| All names | Cearc Uisce | Gallinula chloropus |
| All names | Ceolaire Artach | Phylloscopus borealis |
| All names | Ceolaire Bánlíoch | Hippolais pallida |
| All names | Ceolaire Barrach | Sylvia nisoria |
| All names | Ceolaire Binn | Hippolais polyglotta |
| All names | Ceolaire Blyth | Acrocephalus baeticatus |
| All names | Ceolaire Blyth | Acrocephalus dumetorum |
| All names | Ceolaire Bonelli | Phylloscopus bonelli |
| All names | Ceolaire Breacdhorcha | Phylloscopus fuscatus |
| All names | Ceolaire Buí | Dendroica petechia |
| All names | Ceolaire Buímhalach | Phylloscopus humei |
| All names | Ceolaire Buímhalach | Phylloscopus inornatus |
| All names | Ceolaire Buíphrompach | Dendroica coronata |
| All names | Ceolaire Casarnaí | Locustella naevia |
| All names | Ceolaire Casarnaí Pallas | Locustella certhiola |
| All names | Ceolaire Cetti | Cettia cetti |
| All names | Ceolaire Cíbe | Acrocephalus schoenobaenus |
| All names | Ceolaire Coille | Phylloscopus sibilatrix |
| All names | Ceolaire Corraigh | Acrocephalus palustris |
| All names | Ceolaire Dubh is Bán | Mniotilta varia |
| All names | Ceolaire Dubhéadanach | Dendroica striata |
| All names | Ceolaire Earrfheanach | Cisticola juncidis |
| All names | Ceolaire Fa-Alpach | Sylvia cantillans |
| All names | Ceolaire Fraoigh | Sylvia undata |
| All names | Ceolaire Garraí | Sylvia borin |
| All names | Ceólaire garrdha | Sylvia borin |
| All names | Ceolaire Giolcaí | Acrocephalus scirpaceus |
| All names | Ceolaire Gort Rise | Acrocephalus agricola |
| All names | Ceolaire Ictireach | Hippolais icterina |
| All names | Ceolaire Pallas | Phylloscopus proregulus |
| All names | Ceolaire Radde | Phylloscopus schwarzi |
| All names | Ceolaire Sailí | Phylloscopus trochilus |
| All names | Ceólaire sailí | Phylloscopus trochilus |
| All names | Ceolaire Sairdíneach | Sylvia melanocephala |
| All names | Ceolaire Savi | Locustella luscinioides |
| All names | Ceolaire Scothglas | Phylloscopus trochiloides |
| All names | Ceolaire Uisce | Acrocephalus paludicola |
| All names | Cíobhuí | Regulus regulus |
| All names | Cirlghealóg | Emberiza cirlus |
| All names | Clamhán | Buteo buteo |
| All names | Clamhán Lópach | Buteo lagopus |
| All names | Clamhán Riabhach | Pernis apivorus |
| All names | Clamprán | Hydrobates pelagicus |
| All names | Cliobhrean cloich | Oenanthe oenanthe |
| All names | Clochrán | Oenanthe oenanthe |
| All names | Clochrán Alabhreach | Oenanthe pleschanka |
| All names | Clochrán Cluasdubh | Oenanthe hispanica |
| All names | Clochrán dubh | Oenanthe leucura |
| All names | Clochrán dubh bánchorónach | Oenanthe leucopyga |
| All names | Clochrán Fásaigh | Oenanthe deserti |
| All names | Clochrán Gainimh | Oenanthe isabellina |
| All names | Cnagaire Glas | Picus viridis |
| All names | Cnota | Calidris canutus |
| All names | Cóbach | Larus marinus |
| All names | Coileach fhraoigh | Lagopus lagopus |
| All names | Coilleach coille | Phasianus colchicus |
| All names | Coirneach | Pandion haliaetus |
| All names | Coistin faoi cloich | Oenanthe oenanthe |
| All names | Colc | Somateria mollissima |
| All names | Colm | Columba palumbus |
| All names | Colm Aille | Columba livia |
| All names | Colm Coille | Columba palumbus |
| All names | Colm Gorm | Columba oenas |
| All names | Colman ciolle | Columba palumbus |
| All names | Colúr | Columba palumbus |
| All names | Colúr tuinne | Cepphus grylle |
| All names | Corcán coille | Pyrrhula pyrrhula |
| All names | Corcrán Coille | Pyrrhula pyrrhula |
| All names | Corr bhán | Ciconia ciconia |
| All names | Corr Chorcra | Ardea purpurea |
| All names | Corr éisc | Ardea cinerea |
| All names | Corr leathadach | Platalea leucorodia |
| All names | Corr Leitheadach | Platalea leucorodia |
| All names | Corr mhóna | Grus grus |
| All names | Corr Oíche | Nycticorax nycticorax |
| All names | Corr Réisc | Ardea cinerea |
| All names | Corr Scréachach | Ardeola ralloides |
| All names | Cosdeargán | Tringa totanus |
| All names | Cosdeargán Breac | Tringa erythropus |
| All names | Cosdhearg | Pyrrhocorax pyrrhocorax |
| All names | Creabhar | Scolopax rusticola |
| All names | Cromán Liath | Circus pygargus |
| All names | Cromán mona | Circus aeruginosus |
| All names | Cromán Móna | Circus aeruginosus |
| All names | Cromán nag Cearc | Circus cyaneus |
| All names | Crosán | Alca torda |
| All names | Crosghob | Loxia curvirostra |
| All names | Crosghob Báneiteach | Loxia leucoptera |
| All names | Crotach | Numenius arquata |
| All names | Crotach Artach | Numenius borealis |
| All names | Crotach Cloch | Burhinus oedicnemus |
| All names | Crotach Eanaigh | Numenius phaeopus |
| All names | Crotach shamhraidh | Numenius phaeopus |
| All names | Cruidín | Alcedo atthis |
| All names | Cruidín Creasa | Ceryle alcyon |
| All names | Cuach | Cuculus canorus |
| All names | Cuach Ghob-Bhuí | Coccyzus americanus |
| All names | Cuach Ghobdhubh | Coccyzus erythropthalmus |
| All names | Cuilire Alabhreach | Ficedula hypoleuca |
| All names | Cuilire Broinnrua | Ficedula parva |
| All names | Cuilire Liath | Muscicapa striata |
| All names | Cuilsealgaire | Muscicapa striata |
| All names | Cuirliún | Numenius arquata |
| All names | Cúr | Milvus milvus |
| All names | Cúr Dhubh | Milvus migrans |
| All names | Cúr Rua | Milvus milvus |
| All names | Deargán Smeachta | Turdus iliacus |
| All names | Deargán sneachta | Turdus iliacus |
| All names | Deargéadan | Carduelis flammea |
| All names | Deargéadan artach | Carduelis hornemanni |
| All names | Donnóg | Prunella modularis |
| All names | Dreoilín | Troglodytes troglodytes |
| All names | Dreoilín ceannbhuí | Regulus regulus |
| All names | Dreoilín easpoig | Regulus regulus |
| All names | Dreóilin gorm | Prunella modularis |
| All names | Droimneach Beag | Larus fuscus |
| All names | Droimneach Mór | Larus marinus |
| All names | Druid | Sturnus vulgaris |
| All names | Druid Rósach | Pastor roseus |
| All names | Ducaire | Tachybaptus ruficollis |
| All names | Dúchoileach | Tetrao tetrix |
| All names | Éadar | Somateria mollissima |
| All names | Éadar Taibhseach | Somateria spectabilis |
| All names | Eala | Cygnus olor |
| All names | Eala Bewick | Cygnus columbianus |
| All names | Eala Bhalbh | Cygnus olor |
| All names | Eala Ghlórach | Cygnus cygnus |
| All names | Éan Aille | Uria aalge |
| All names | Éan Aille dubh | Cepphus grylle |
| All names | Éan giúrainn | Fratercula arctica |
| All names | Éan Oighinn | Seiurus aurocapilla |
| All names | Earrdeargán Meiriceánach | Setophaga ruticilla |
| All names | Earrdheargán | Phoenicurus phoenicurus |
| All names | Earrdheargán Dubh | Phoenicurus ochruros |
| All names | Éigrit Bheag | Egretta garzetta |
| All names | Éigrit Eallaigh | Bubulcus ibis |
| All names | Éigrit Mhór | Ardea alba |
| All names | Fabhcún Coille | Falco subbuteo |
| All names | Fabhcún Cosdearg | Falco amurensis |
| All names | Fabhcún Cosdearg | Falco vespertinus |
| All names | Fabhcún Gorm | Falco peregrinus |
| All names | Fabhcún Mór | Falco rusticolus |
| All names | Fáinleog | Hirundo rustica |
| All names | Fáinleog Aille | Petrochelidon pyrrhonota |
| All names | Fáinleog Ruaphrompach | Cecropis daurica |
| All names | Falaróp Gobchaol | Phalaropus lobatus |
| All names | Falaróp Gobmhór | Phalaropus fulicarius |
| All names | Falaróp Wilson | Phalaropus tricolor |
| All names | Falcóg Bheag | Alle alle |
| All names | Faocha mhór | Gavia immer |
| All names | Faocha rua | Gavia stellata |
| All names | Faoileán an chaipín | Larus ridibundus |
| All names | Faoileán bán | Larus argentatus |
| All names | Faoileán Bán | Larus canus |
| All names | Faoileán Bandghobach | Larus delawarensis |
| All names | Faoileán ceanndubh | Larus ridibundus |
| All names | Faoileán Eabhartha | Pagophila eburnea |
| All names | Faoileán Glas | Larus hyperboreus |
| All names | Faoileán Íoslannach | Larus glaucoides |
| All names | Faoileán Ross | Rhodostethia rosea |
| All names | Faoileán Scadán | Larus argentatus |
| All names | Faoithean | Podiceps cristatus |
| All names | Faragán | Phalaropus lobatus |
| All names | Feadóg an fhainne | Charadrius hiaticula |
| All names | Feadóg Bhuí | Pluvialis apricaria |
| All names | Feadóg Bhuí Áiseach | Pluvialis fulva |
| All names | Feadóg Bhuí Mheiriceánach | Pluvialis dominica |
| All names | Feadóg Chladaigh | Charadrius hiaticula |
| All names | Feadóg Ghlas | Pluvialis squatarola |
| All names | Feadóg Ghlórach | Charadrius vociferus |
| All names | Feadóg rua | Pluvialis apricaria |
| All names | Feadóigín Chladaigh | Charadrius dubius |
| All names | Feadóigín Chosdubh | Charadrius alexandrinus |
| All names | Feannóg agus | Corvus cornix |
| All names | Feannóg dubh | Corvus cornix |
| All names | Fearán | Streptopelia turtur |
| All names | Fearán Baicdhubh | Streptopelia decaocto |
| All names | Féarán breac | Streptopelia turtur |
| All names | Fiach Dubh | Corvus corax |
| All names | Filiméala | Luscinia megarhynchos |
| All names | Filiméala Smólaigh | Luscinia luscinia |
| All names | Foitheach Cluasach | Podiceps auritus |
| All names | Foitheach Gob-Alabhreac | Podilymbus podiceps |
| All names | Foitheach Mór | Podiceps cristatus |
| All names | Foitheach Píbdhubh | Podiceps nigricollis |
| All names | Foitheach Píbrua | Podiceps grisegena |
| All names | Foracha | Uria aalge |
| All names | Foracha Brünnich | Uria lomvia |
| All names | Foracha Dhubh | Cepphus grylle |
| All names | Fuipín | Fratercula arctica |
| All names | Fuiseog | Alauda arvensis |
| All names | Fuiseóg | Alauda arvensis |
| All names | Fuiseog Adharcach | Eremophila alpestris |
| All names | Fuiseog Choille | Lullula arborea |
| All names | Fuiseog Ladharghearr | Calandrella brachydactyla |
| All names | Fulmaire | Fulmarus glacialis |
| All names | Gabha Dubh | Cinclus cinclus |
| All names | Gabhlán Alpach | Tachymarptis melba |
| All names | Gabhlán Bánlíoch | Apus pallidus |
| All names | Gabhlán Beag | Apus affinis |
| All names | Gabhlán Binne | Delichon urbicum |
| All names | Gabhlán Earrspíonach | Hirundapus caudacutus |
| All names | Gabhlán Gainimh | Riparia riparia |
| All names | Gabhlán Gaoithe | Apus apus |
| All names | Gadual | Anas strepera |
| All names | Gainéad | Morus bassanus |
| All names | Gaineamhchearc Pallas | Syrrhaptes paradoxus |
| All names | Gairg | Mergus serrator |
| All names | Gamhlán gainimh | Riparia riparia |
| All names | Gé Bhánéadanach | Anser albifrons |
| All names | Gé bhroinnrua | Branta ruficollis |
| All names | Gé Cheanadach | Branta canadensis |
| All names | Gé dhubh | Branta bernicla |
| All names | Gé Ghiúrainn | Branta leucopsis |
| All names | Gé Ghlas | Anser anser |
| All names | Gé Ghobghearr | Anser brachyrhynchus |
| All names | Gé ghúirainn | Branta bernicla |
| All names | Gé ghúirainn | Branta leucopsis |
| All names | Gé mhór fhionn | Anser anser |
| All names | Gé Shneachta | Chen caerulescens |
| All names | Gé Shneachta | Anser caerulescens |
| All names | Geabhróg | Sterna hirundo |
| All names | Geabhróg Artach | Sterna paradisaea |
| All names | Geabhróg Bháneiteach | Chlidonias leucopterus |
| All names | Geabhróg Bheag | Sternula albifrons |
| All names | Geabhróg Bhroinndubh | Chlidonias hybrida |
| All names | Geabhróg Chaispeach | Hydroprogne caspia |
| All names | Geabhróg Dhubh | Chlidonias niger |
| All names | Geabhróg Forster | Sterna forsteri |
| All names | Geabhróg Ghalánta | Thalasseus elegans |
| All names | Geabhróg Ghobdhubh | Gelochelidon nilotica |
| All names | Geabhróg Rósach | Sterna dougallii |
| All names | Geabhróg Scothdhubh | Thalasseus sandvicensis |
| All names | Geabhróg spéaclach | Onychoprion anaethetus |
| All names | Gealbhan Binne | Passer domesticus |
| All names | Gealbhan coille | Prunella modularis |
| All names | Gealbhan Crainn | Passer montanus |
| All names | Gealbhan Píbgheal | Zonotrichia albicollis |
| All names | Gealbhan Sionnaigh | Passerella iliaca |
| All names | Gealóg Bheag | Emberiza pusilla |
| All names | Gealóg Bhroinnbhuí | Emberiza aureola |
| All names | Gealóg Bhuachair | Emberiza calandra |
| All names | Gealóg Cheanndubh | Emberiza melanocephala |
| All names | Gealog dhúcheannach | Emberiza schoeniclus |
| All names | Gealóg Gharraí | Emberiza hortulana |
| All names | Gealóg Ghiolcaí | Emberiza schoeniclus |
| All names | Gealóg Laplannach | Calcarius lapponicus |
| All names | Gealóg Phéine | Emberiza leucocephalos |
| All names | Gealóg Phlúiríneach | Passerina cyanea |
| All names | Gealóg Shneachta | Plectrophenax nivalis |
| All names | Gealóg Thuathúil | Emberiza rustica |
| All names | Gealún buidhe | Emberiza citrinella |
| All names | Gealún cátha | Fringilla coelebs |
| All names | Gealún creige | Carduelis cannabina |
| All names | Gealún cuilinn | Pyrrhula pyrrhula |
| All names | Gealún fearnóige | Carduelis spinus |
| All names | Gealún fothanán | Carduelis carduelis |
| All names | Gealún giolcaighe | Emberiza schoeniclus |
| All names | Gealún guib reamhair | Emberiza calandra |
| All names | Gealún linne | Carduelis chloris |
| All names | Gealún sciobóil | Passer domesticus |
| All names | Gearg | Coturnix coturnix |
| All names | Gearr Baillon | Porzana pusilla |
| All names | Gearr Beag | Porzana parva |
| All names | Gearr Breac | Porzana porzana |
| All names | Gearr Sora | Porzana carolina |
| All names | Gearr uisc | Hydrobates pelagicus |
| All names | Géis | Cygnus olor |
| All names | Gilphíb | Sylvia communis |
| All names | Gilphíb Bheag | Sylvia curruca |
| All names | Gilphíob | Sylvia communis |
| All names | Glaisneach | Turdus pilaris |
| All names | Glasair choille | Carduelis carduelis |
| All names | Glasán Darach | Carduelis chloris |
| All names | Glasán Gobmhór | Coccothraustes coccothraustes |
| All names | Glasán lín | Carduelis cannabina |
| All names | Glaséan Philadelphia | Vireo philadelphicus |
| All names | Glaséan Súildearg | Vireo olivaceus |
| All names | Glasóg | Motacilla alba |
| All names | Glasóg Bhuí | Motacilla flava |
| All names | Glasóg cheannliath | Motacilla cinerea |
| All names | Glasóg Chiotrónach | Motacilla citreola |
| All names | Glasóg Liath | Motacilla cinerea |
| All names | Glasóg Shráide | Motacilla alba |
| All names | Gleoiseach | Carduelis cannabina |
| All names | Gleoiseach Sléibhe | Carduelis flavirostris |
| All names | Gleoisín cúldearg | Carduelis flammea |
| All names | Gobach Mór Broinnrósach | Pheucticus ludovicianus |
| All names | Gobadáinín Beag | Calidris minuta |
| All names | Gobadáinín Bídeach | Calidris minutilla |
| All names | Gobadáinín Ladharfhada | Calidris subminuta |
| All names | Gobadáinín Lartharach | Calidris mauri |
| All names | Gobadáinín Temminck | Calidris temminckii |
| All names | Gobadán | Haematopus ostralegus |
| All names | Gobadán Aonarach | Tringa solitaria |
| All names | Gobadán Baird | Calidris bairdii |
| All names | Gobadán Bánphrompach | Calidris fuscicollis |
| All names | Gobadán Breac | Actitis macularius |
| All names | Gobadán Broinn-Donnbhuí | Tryngites subruficollis |
| All names | Gobadán Coille | Tringa glareola |
| All names | Gobadán Coiteann | Actitis hypoleucos |
| All names | Gobadán Corraigh | Tringa stagnatilis |
| All names | Gobadán Cosbhuí | Calidris maritima |
| All names | Gobadán Crotaigh | Calidris ferruginea |
| All names | Gobadán Earr-Rinneach | Calidris acuminata |
| All names | Gobadán Glas | Tringa ochropus |
| All names | Gobadán Gobleathan | Limicola falcinellus |
| All names | Gobadán Mionbhosach | Calidris pusilla |
| All names | Gobadán Scodalach | Calidris himantopus |
| All names | Gobadán Sléibhe | Bartramia longicauda |
| All names | Gobadán Terek | Xenus cinereus |
| All names | Gobadán Uchtach | Calidris melanotos |
| All names | Gormphíb | Luscinia svecica |
| All names | Grús | Grus grus |
| All names | Grús Ceanadach | Grus canadensis |
| All names | Guairdeall | Hydrobates pelagicus |
| All names | Guairdeall Gabhlach | Oceanodroma leucorhoa |
| All names | Guairdeall Maidéarach | Oceanodroma castro |
| All names | Guairdeall Wilson | Oceanites oceanicus |
| All names | Guga | Morus bassanus |
| All names | Guilbneach Earrdhubh | Limosa limosa |
| All names | Guilbneach Stríocearrach | Limosa lapponica |
| All names | Guilbnín Gobfhada | Limnodromus scolopaceus |
| All names | Guilbnín Gobghearr | Limnodromus griseus |
| All names | Húpú | Upupa epops |
| All names | Iascaire coirneach | Pandion haliaetus |
| All names | Íbis Niamhrach | Plegadis falcinellus |
| All names | Iolair Maol | Haliaeetus leucocephalus |
| All names | Iolair Mara | Haliaeetus albicilla |
| All names | Iolar Breac | Aquila clanga |
| All names | Iolar Fíréan | Aquila chrysaetos |
| All names | Iolar fíréin | Aquila chrysaetos |
| All names | Iolar mara | Haliaeetus albicilla |
| All names | Iscaire cóirneach | Alcedo atthis |
| All names | Lacha Bhadánach | Aythya fuligula |
| All names | Lacha bhinn | Clangula hyemalis |
| All names | Lacha bhreach | Tadorna tadorna |
| All names | Lacha Chosrua | Anas rubripes |
| All names | Lacha dhubh | Aythya fuligula |
| All names | Lacha Earrfhada | Clangula hyemalis |
| All names | Lacha Fhiáin | Anas platyrhynchos |
| All names | Lacha Lascán | Aythya marila |
| All names | Lacha lochlannach | Somateria mollissima |
| All names | Lacha Mhandrach | Aix galericulata |
| All names | Lacha mhásach | Aythya ferina |
| All names | Lacha Mhuinceach | Aythya collaris |
| All names | Lacha rua | Anas penelope |
| All names | Lacha Rua | Oxyura jamaicensis |
| All names | Lacha stiúrach | Anas acuta |
| All names | Ladhrán Buí | Tringa melanoleuca |
| All names | Ladhrán deargchosach | Tringa totanus |
| All names | Ladhrán locha | Actitis hypoleucos |
| All names | Ladhrán trá | Tringa totanus |
| All names | Laidhrín geal | Calidris alba |
| All names | Laidhrín Glas | Tringa nebularia |
| All names | Lasair Choille | Carduelis carduelis |
| All names | Lasair coille | Carduelis carduelis |
| All names | Lasairchíor | Regulus ignicapilla |
| All names | Lasairéan | Phoenicopterus roseus |
| All names | Liath tráisg | Turdus viscivorus |
| All names | Liatráisc | Turdus viscivorus |
| All names | Lóma Artach | Gavia arctica |
| All names | Lóma Gobgheal | Gavia adamsii |
| All names | Lóma Mór | Gavia immer |
| All names | Lóma Rua | Gavia stellata |
| All names | Lon abhann | Cinclus cinclus |
| All names | Lon Creige | Turdus torquatus |
| All names | Lon Dubh | Turdus merula |
| All names | Londubh | Turdus merula |
| All names | Luachairín Shúildubh | Junco hyemalis |
| All names | Luatharán | Charadrius hiaticula |
| All names | Luathrán | Calidris alba |
| All names | Lúma | Gavia immer |
| All names | Lúnadán | Podiceps cristatus |
| All names | Magaide | Pica pica |
| All names | Máirtíneach | Hydrobates pelagicus |
| All names | Mallard | Anas platyrhynchos |
| All names | Meanglán | Certhia familiaris |
| All names | Meantán Croiméalach | Panurus biarmicus |
| All names | Meantán cuircíneach | Lophophanes cristatus |
| All names | Meantán Dubh | Periparus ater |
| All names | Meantán Earrfhada | Aegithalos caudatus |
| All names | Meantán fada | Aegithalos caudatus |
| All names | Meantán Gorm | Cyanistes caeruleus |
| All names | Meantán Lathaí | Poecile palustris |
| All names | Meantán léana | Poecile montana |
| All names | Meantán Mór | Parus major |
| All names | Meath gabhar | Gallinago gallinago |
| All names | Meirleach Artach | Stercorarius parasiticus |
| All names | Meirleach Earrfhada | Stercorarius longicaudus |
| All names | Meirleach mara | Stercorarius longicaudus |
| All names | Meirleach mara | Stercorarius parasiticus |
| All names | Meirleach mara | Stercorarius pomarinus |
| All names | Meirleach Mór | Stercorarius skua |
| All names | Meirleach Pomairíneach | Stercorarius pomarinus |
| All names | Meirliún | Falco columbarius |
| All names | MionFhuiseog Ladharghearr | Calandrella rufescens |
| All names | Mionghé Bhánéadanach | Anser erythropus |
| All names | Miongheabhróg Chíorach | Thalasseus bengalensis |
| All names | Mionlacha Lascán | Aythya affinis |
| All names | Mionladhran Buí | Tringa flavipes |
| All names | Mionnán aeir | Gallinago gallinago |
| All names | Mionphocaire Gaoithe | Falco naumanni |
| All names | Mionscréachán Liath | Lanius minor |
| All names | Mórcheolaire Giolcaí | Acrocephalus arundinaceus |
| All names | Mórchnagaire Breac | Dendrocopos major |
| All names | Mórchuach Bhreac | Clamator glandarius |
| All names | Mórscréachán Liath | Lanius excubitor |
| All names | Muir eun | Uria aalge |
| All names | Muiréan | Uria aalge |
| All names | Murlach | Alcedo atthis |
| All names | Naosach | Gallinago gallinago |
| All names | Naoscach | Gallinago gallinago |
| All names | Naoscach Bhídeach | Lymnocryptes minimus |
| All names | Naoscach Mhór | Gallinago media |
| All names | Óiréal | Bucephala clangula |
| All names | Órshóileach | Oriolus oriolus |
| All names | Parúl Tuaisceartach | Parula americana |
| All names | Patraisc | Perdix perdix |
| All names | Patraisc Chosdearg | Alectoris rufa |
| All names | Peadairín Bulwer | Bulweria bulwerii |
| All names | Peadairín clúmhach deisceartach | Pterodroma mollis |
| All names | Peadairín clúmhach Maidéarach | Pterodroma madeira |
| All names | Peadairín na stoirme | Hydrobates pelagicus |
| All names | Peatraisc | Perdix perdix |
| All names | Piardálai Trá | Arenaria interpres |
| All names | Piasun | Phasianus colchicus |
| All names | Piasún | Phasianus colchicus |
| All names | Piasún órga | Chrysolophus pictus |
| All names | Pilibín | Vanellus vanellus |
| All names | Pilibín Ealtúil | Vanellus gregarius |
| All names | Píobaire | Carduelis spinus |
| All names | Pocaire Gaoithe | Falco tinnunculus |
| All names | Póiseard | Aythya ferina |
| All names | Póiseard Cíordhearg | Netta rufina |
| All names | Póiseard Súilbhán | Aythya nyroca |
| All names | Praslacha | Anas carolinensis |
| All names | Praslacha | Anas crecca |
| All names | Praslacha Bhaikalach | Anas formosa |
| All names | Praslacha ghlaseiteach | Anas carolinensis |
| All names | Praslacha ghlaseiteach | Anas crecca |
| All names | Praslacha Ghormeiteach | Anas discors |
| All names | Praslacha Shamhraidh | Anas querquedula |
| All names | Pratancól Dubheiteach | Glareola nordmanni |
| All names | Pratancól Muinceach | Glareola pratincola |
| All names | Préachán | Corvus frugilegus |
| All names | Préachán binne | Corvus splendens |
| All names | Préachán na gcrearc | Circus aeruginosus |
| All names | Puifín | Fratercula arctica |
| All names | Ralóg Uisce | Rallus aquaticus |
| All names | Rásaí Banbhuí | Cursorius cursor |
| All names | Rí Rua | Fringilla coelebs |
| All names | Riabhóg | Prunella modularis |
| All names | Riabhóg chladaigh | Anthus spinoletta |
| All names | Riabhóg Chladaigh | Anthus petrosus |
| All names | Riabhóg Choille | Anthus trivialis |
| All names | Riabhóg Dhonn | Anthus campestris |
| All names | Riabhóg Dhroimghlas | Anthus hodgsoni |
| All names | Riabhóg Mhóna | Anthus pratensis |
| All names | Riabhóg Pechora | Anthus gustavi |
| All names | Riabhóg Phíbrua | Anthus cervinus |
| All names | Riabhóg Richard | Anthus richardi |
| All names | Riabhóg Tharr-Dhonnbhuí | Anthus rubescens |
| All names | Riabhóg Uisce | Anthus spinoletta |
| All names | Ríura | Fringilla coelebs |
| All names | Roilleach | Haematopus ostralegus |
| All names | Rollóir | Coracias garrulus |
| All names | Rósghlasán Coiteann | Carpodacus erythrinus |
| All names | Rúach | Corvus frugilegus |
| All names | Rualacha | Anas penelope |
| All names | Rualacha Mheiriceánach | Anas americana |
| All names | Rufachán | Philomachus pugnax |
| All names | Sacán | Turdus pilaris |
| All names | Saidhbhéar | Rissa tridactyla |
| All names | Saidhlín aeir | Actitis hypoleucos |
| All names | Scadalach Dhubheiteach | Himantopus himantopus |
| All names | Scaga | Phalacrocorax aristotelis |
| All names | Sceadach | Melanitta fusca |
| All names | Scótar | Melanitta nigra |
| All names | Scótar Toinne | Melanitta perspicillata |
| All names | Scréachán Coille | Lanius senator |
| All names | Scréachán Droimrua | Lanius collurio |
| All names | Scréachóg | Garrulus glandarius |
| All names | Scréachóg choille | Garrulus glandarius |
| All names | Scréachóg Reilige | Tyto alba |
| All names | Seabhac buidhe | Falco tinnunculus |
| All names | Seabhac gorm | Falco peregrinus |
| All names | Seabhac seilge | Falco peregrinus |
| All names | Seaínín dírúach | Lymnocryptes minimus |
| All names | Seil-Lacha | Tadorna tadorna |
| All names | Seil-Lacha Rua | Tadorna ferruginea |
| All names | Seirín | Serinus serinus |
| All names | Síodeiteach | Bombycilla garrulus |
| All names | Síolghé | Anser fabalis |
| All names | Siolta | Anas carolinensis |
| All names | Siolta | Anas crecca |
| All names | Síolta Chochaill | Lophodytes cucullatus |
| All names | Síolta Gheal | Mergellus albellus |
| All names | Síolta Mhór | Mergus merganser |
| All names | Síolta Rua | Mergus serrator |
| All names | Síotaí mor | Mergus merganser |
| All names | Siscín | Carduelis spinus |
| All names | Siubháinín an bhóthair | Motacilla alba |
| All names | Slapaire | Anas clypeata |
| All names | Sléibhín | Larus ridibundus |
| All names | Sléibhín an Gháire | Larus atricilla |
| All names | Sléibhín Beag | Larus minutus |
| All names | Sléibhín Bonaparte | Larus philadelphia |
| All names | Sléibhín Franklin | Larus pipixcan |
| All names | Sléibhín Meánmhuirí | Larus melanocephalus |
| All names | Sléibhín Sabine | Xema sabini |
| All names | Smiú | Mergellus albellus |
| All names | Smólach | Turdus philomelos |
| All names | Smólach Aille | Monticola saxatilis |
| All names | Smólach Ceoil | Turdus philomelos |
| All names | Smólach Glasleicneach | Catharus minimus |
| All names | Smólach Imirce | Turdus migratorius |
| All names | Smólach mór | Turdus viscivorus |
| All names | Smólach píbdhubh | Turdus ruficollis |
| All names | Smólach Sibéarach | Zoothera sibirica |
| All names | Smólach Swainson | Catharus ustulatus |
| All names | Smólach Uisce Tuaisceartach | Seiurus noveboracensis |
| All names | Smólach White | Zoothera dauma |
| All names | Snag | Certhia familiaris |
| All names | Snag Breac | Pica pica |
| All names | Snagaide | Pica pica |
| All names | Spadalach | Anas clypeata |
| All names | Spágaire Tonn | Tachybaptus ruficollis |
| All names | Spideog | Erithacus rubecula |
| All names | Spideóg | Erithacus rubecula |
| All names | Spioróg | Accipiter nisus |
| All names | Spioróg Mhór | Accipiter gentilis |
| All names | Storc Bán | Ciconia ciconia |
| All names | Storc Dubh | Ciconia nigra |
| All names | Strapadóir giolcaighe | Emberiza schoeniclus |
| All names | Súdhiúlaí Tarrbhuí | Sphyrapicus varius |
| All names | Tanagair Scarlóideach | Piranga olivacea |
| All names | Tiuf-Teaf | Phylloscopus collybita |
| All names | Tomaire beag | Tachybaptus ruficollis |
| All names | Torspideog Ruadhonn | Cercotrichas galactotes |
| All names | Traonach | Crex crex |
| All names | Traonach uisce | Rallus aquaticus |
| All names | Truisc | Gallinula chloropus |
| All names | Tuirne Lín | Caprimulgus europaeus |
| All names | Túirne lín | Caprimulgus europaeus |
| All names | Tumaire | Mergus serrator |
| All names | Ulchabhán Beag | Athene noctua |
| All names | Ulchabhán Réisc | Asio flammeus |
| All names | Ulchabhán Scopach | Otus scops |
| All names | Ulchabhán Sneachtúil | Bubo scandiacus |
| All names | Urdhubhán | Hydrobates pelagicus |
