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| Author(s) [A-Z] | Year [ascending] | Title | Type | Journal | Citation |
| Campbell, D.C. | 1900 | Bittern near Londonderry | Journal | Ir. Nat. | Details... |
| Campbell, D.C. | 1900 | Grey phalarope on Lough Foyle | Journal | Ir. Nat. | Details... |
| Fahy, M. | 1900 | Egyptian goose in Co. Derry | Journal | Ir. Nat. | Details... |
| Faris, J.A. | 1900 | Birds' nests in strange places | Journal | Ir. Nat. | Details... |
| Gibson, T.B. | 1900 | Spring migrants in Co. Wexford | Journal | Ir. Nat. | Details... |
| Gleeson, M. | 1900 | Bird notes from North Tipperary | Journal | Ir. Nat. | Details... |
| Johnson, W.F. | 1900 | Spring migrants at Poyntzpass | Journal | Ir. Nat. | Details... |
| Knox, E.B. | 1900 | The ruff in Ireland | Journal | Ir. Nat. | Details... |
| Moffat, C.B. | 1900 | Pied wagtails roosting among reeds | Journal | Ir. Nat. | Details... |
| Moffat, C.B. | 1900 | Review: 'The birds of Ireland' by R.J. Ussher & R. Warren | Journal | Ir. Nat. | Details... |
| Patten, C.J. | 1900 | Sea birds and severe weather | Journal | Ir. Nat. | Details... |
| Patten, C.J. | 1900 | Reed buntings on the sea-beach | Journal | Ir. Nat. | Details... |
| Patten, C.J. | 1900 | Nocturnal habits of grey plover | Journal | Ir. Nat. | Details... |
| Patten, C.J. | 1900 | The natural history of the ruff | Journal | Ir. Nat. | Details... |
| Patten, C.J. | 1900 | The ruff in Ireland | Journal | Ir. Nat. | Details... |
| Patterson, R. | 1900 | Hoopoe in Co. Antrim | Journal | Ir. Nat. | Details... |
| Patterson, R. | 1900 | Early arrival of redwing | Journal | Ir. Nat. | Details... |
| Patterson, R. | 1900 | Common bittern in Co. Down | Journal | Ir. Nat. | Details... |
| Robertson, J.G. | 1900 | A kingfisher at Ranelagh | Journal | Ir. Nat. | Details... |
| Ussher, R.J. | 1900 | Supposed reed warbler in Co. Tipperary | Journal | Ir. Nat. | Details... |
2846 references found.