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| Author(s) [A-Z] | Year [ascending] | Title | Type | Journal | Citation |
| Lafferty, H.A. | 1931 | Late nesting swallows | Journal | Ir. Nat. J. | Details... |
| Lang, J.T. | 1958 | Little egrets, Egretta garzetta, in Ireland in 1957 in Co. Wicklow | Journal | Ir. Nat. J. | Details... |
| Lang, J.T. | 1970 | Review: 'Peregrine falcon populations - their biology and decline' ed. J.J. Hickey | Journal | Ir. Nat. J. | Details... |
| Langham, C. | 1896 | Iceland gull on the Sligo coast | Journal | Ir. Nat. | Details... |
| Langham, C. | 1906 | Fork-tailed petrel in Co. Fermanagh | Journal | Ir. Nat. | Details... |
| Langham, C. | 1913 | Stock doves in County Fermanagh | Journal | Ir. Nat. | Details... |
| Langtry, R.L. | 1909 | A summer fieldfare in Co. Down | Journal | Ir. Nat. | Details... |
| Lawlor, H.C. | 1927 | A white robin | Journal | Ir. Nat. J. | Details... |
| Leebody, J.R. | 1892 | Black-tailed godwit (Limosa belgica) on Lough Swilly | Journal | Ir. Nat. | Details... |
| Leebody, J.R. | 1892 | Notes on the birds of Lough Swilly | Journal | Ir. Nat. | Details... |
| Leebody, J.R. | 1903 | Wild swans in Donegal | Journal | Ir. Nat. | Details... |
| Leebody, J.R. | 1904 | The hawfinch in Donegal | Journal | Ir. Nat. | Details... |
| Leslie, J. | 1932 | Natter's bat in Co. Monaghan, and suggestion for barn owl census | Journal | Ir. Nat. J. | Details... |
| Limerick Naturalists' Field Club | 1897 | Limerick Naturalists' Field Club | Journal | Ir. Nat. | Details... |
| Lindner, C. | 1911 | Ignis fatuus' versus 'luminous owls' | Journal | Ir. Nat. | Details... |
| Lindner, C. | 1912 | Luminous owls: supplementary note | Journal | Ir. Nat. | Details... |
| Lisney, A.A. | 1926 | A lonely pair of blackbirds on Ireland's Eye | Journal | Ir. Nat. J. | Details... |
| Lisney, A.A. | 1927 | Some stray bird notes from Counties Dublin and Wicklow | Journal | Ir. Nat. J. | Details... |
| Lloyd, C.S. | 1983 | The status of landbirds breeding on Great Saltee, Co. Wexford | Journal | Ir. Nat. J. | Details... |
| Lloyd, C.S. | 1984 | The birds of Clare Island, Co. Mayo in June 1982 | Journal | Ir. Nat. J. | Details... |
2846 references found.