For reference only — not regular garden or park birds.
Ireland's position on the edge of the Atlantic makes it a magnet for storm-blown rarities. After autumn gales, birders on offshore islands and headlands — Cape Clear Island and Mizen Head in Cork, the Bridges of Ross in Clare, Tory Island in Donegal, and Blacksod in Mayo among the most famous — can encounter astonishing vagrants from as far away as North America and Siberia. These species are excluded from the main finder above because they are unpredictable, non-resident, and unsuitable for regular garden or park birdwatching.
| Species | Notes |
|---|---|
| Hoopoe (Húpú) | Colourful crested vagrant from southern Europe, most often on southern and western coasts in spring. |
| European Bee-eater (Beachadóir Eorpach) | Dazzling multicoloured rare spring/summer overshoot from the Mediterranean. |
| Wryneck (Cam-Mhuin) | Cryptically patterned relative of the woodpeckers; scarce autumn passage migrant. |
| American Robin (Smólach Imirce) | Nearctic thrush occasionally carried across the Atlantic by winter storms. |
| Rose-coloured Starling (Druid Rósach) | Pink-and-black vagrant from southeast Europe/Asia, sometimes seen among Starling flocks. |
| Snowy Owl (Ulchabhán Sneachtúil) | Huge white Arctic owl; an exceptionally rare winter vagrant. |
| Ivory Gull (Faoileán Eabhartha) | All-white Arctic gull; one of Ireland's rarest winter visitors. |
| Pallas's Warbler (Ceolaire Pallas) | Tiny Siberian warbler occasionally reaching Ireland's southwest in late autumn. |
| Black-browed Albatross (Albatras Dúmhalach) | Ocean wanderer from the Southern Hemisphere; recorded only a handful of times. |
| Ring-necked Duck (Lacha Mhuinceach) | North American diving duck; an increasingly regular but still scarce winter visitor. |
| Bonaparte's, Franklin's & Laughing Gulls | American gulls occasionally reported, especially after autumn Atlantic storms. |
| White-crowned Sparrow / Dark-eyed Junco | Very rare North American songbird vagrants, mostly recorded on offshore islands. |