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| Author(s) [A-Z] | Year [ascending] | Title | Type | Journal | Citation |
| Ussher, R.J. | 1899 | Cormorants breeding in trees | Journal | Ir. Nat. | Details... |
| Ussher, R.J. | 1899 | Gannets on the Bull Rock | Journal | Ir. Nat. | Details... |
| Ussher, R.J. | 1900 | Supposed reed warbler in Co. Tipperary | Journal | Ir. Nat. | Details... |
| Ussher, R.J. | 1900 | Snow-goose in Ireland | Journal | Ir. Nat. | Details... |
| Ussher, R.J. | 1900 | Call of the spotted crake | Journal | Ir. Nat. | Details... |
| Ussher, R.J. | 1900 | The ruff in Ireland | Journal | Ir. Nat. | Details... |
| Ussher, R.J. | 1901 | Black-tailed godwits in Co. Wexford | Journal | Ir. Nat. | Details... |
| Ussher, R.J. | 1901 | Review: 'The migration of birds as observed at Irish lighthouses and lightships' by R.M. Barrington | Journal | Ir. Nat. | Details... |
| Ussher, R.J. | 1901 | The great and sooty shearwaters on the south coast | Journal | Ir. Nat. | Details... |
| Ussher, R.J. | 1901 | Red-throated pipit in Co. Mayo | Journal | Ir. Nat. | Details... |
| Ussher, R.J. | 1902 | Great auk in Co. Clare | Journal | Ir. Nat. | Details... |
| Ussher, R.J. | 1902 | The avifauna of Ireland as affected by its geography | Journal | Ir. Nat. | Details... |
| Ussher, R.J. | 1903 | Swallows in March | Journal | Ir. Nat. | Details... |
| Ussher, R.J. | 1904 | Birds met with in the Shannon Valley | Journal | Ir. Nat. | Details... |
| Ussher, R.J. | 1904 | Birds and their breeding habits | Journal | Proc. Belf. Nat. Fld. Club | Details... |
| Ussher, R.J. | 1905 | Great shearwaters and sooty shearwaters in 1901 | Journal | Ir. Nat. | Details... |
| Ussher, R.J. | 1905 | Birds met with on Connaught lakes | Journal | Ir. Nat. | Details... |
| Ussher, R.J. | 1905 | Common scoter breeding in Ireland | Journal | Ir. Nat. | Details... |
| Ussher, R.J. | 1905 | Decrease of crossbills | Journal | Ir. Nat. | Details... |
| Ussher, R.J. | 1905 | Quail in Co. Waterford | Journal | Ir. Nat. | Details... |
2846 references found.