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Idle, H. 1931. The Flamingo in Kent. Country Life 70: 107.

Illa, M, Collinson, J. M. & Shannon, T. 2019. Western Subalpine Warblers showing features of Eastern Subalpine Warbler. British Birds 112: 298-300.

Im Thurn, E. F. 1869. Rare Birds in Oxfordshire. Field 33: 468.

Im Thurn, E. F. 1869. Painted Bunting in Oxfordshire. Field 33: 502.

Im Thurn, E. F. 1869. Painted Bunting in Oxfordshire. Zoologist (2nd series) 4: 1865.

Inchbald, P. 1882. White's Thrush in Yorkshire. Field 59: 201.

Inchbald, P. 1890. Supposed occurrence of the Blue Thrush at Scarborough. Field 76: 599.

Incledon, C. S. L. 1968. Brown Thrasher in Dorset: a species new to Britain and Ireland. British Birds 61: 550-553.

Ingram, C. 1908. Some Rare Kentish Birds. Zoologist (4th series) 12: 272.

Ingram, G. C. S. 1921-22. Probable Ivory Gull in Glamorgan. British Birds 15: 22.

Ingram, G. C. S. 1921-22. Albinistic Gulls and Ivory Gulls. British Birds 15: 244.

Ingram, G. C. S. 1943-44. Pied and Red-breasted Flycatchers in Glamorgan. British Birds 37: 134-135.

Ingram, G. C. S. 1952. Richard's Pipit in Monmouthshire. British Birds 45: 409.

Ingram, G. C. S. & Morrey Salmon, H. 1921. Ornithological Notes, 1920-21. Transactions of the Cardiff Naturalists' Society 54: 72-75.

Ingram, G. C. S. & Morrey Salmon, H. 1934. Ornithological Notes, 1933-34. Transactions of the Cardiff Naturalists' Society 67: 111-118.

Ingram, G. C. S. & Morrey Salmon, H. 1937. Ornithological Notes, 1936-37. Transactions of the Cardiff Naturalists' Society 70: 33-42.

Ingram, G. C. S. & Morrey Salmon, H. 1938. Ornithological Notes, 1937-38. Transactions of the Cardiff Naturalists' Society 71: 15-24.

Ingram, G. C. S. & Morrey Salmon, H. 1939-40. Ferruginous Duck in Glamorgan. British Birds 33: 278-279.

Ingram, G. C. S. & Morrey Salmon, H. 1948-50. Ornithological Notes, 1948-50. Transactions of the Cardiff Naturalists' Society 80: 28-33.

Ingram, G. C. S. & Morrey Salmon, H. 1950-52. Ornithological Notes, 1950-52. Transactions of the Cardiff Naturalists' Society 81: 93-97.

Ingram, G. C. S. & Morrey Salmon, H. 1952-53. Ornithological Notes, 1952-53. Transactions of the Cardiff Naturalists' Society 82: 36-38.

Ingram, M. J. 1934-35. Little Bittern seen in Devonshire. British Birds 28: 53.

Inkster, A. 1902. The occurrence of Tengmalm's Owl in Shetland. Annals of Scottish Natural History 11: 119.

Inkster, C. J. 1959. Roller in Shetland. Scottish Birds 1: 72.

Irby, L. H. L. 1852. Occurrence of the Little Crake in Norfolk. Zoologist (1st series) 10:

Irby, L. H. L. 1852. Occurrence of the White Stork near Yarmouth. Zoologist (1st series) 10: 3476-3477.

Irby, L. H. L. 1879. The Purple Gallinule. Field 53: 15.

Irby, L. H. L. 1899. Observations on the Birds of the Islands of Tiree and Coll. Annals of Scottish Natural History 8: 206-210.

Iremonger, H. E. W. 1917. Lesser Grey Shrike in Hants. Field 129: 596.

Irvine, J. 2012. An Eleonora's Falcon in Cornwall. Birding World 25 (8): 326-327.

Irvine, J-L. 2024. Western Olivaceous Warbler, Skibberhoull, Whalsay, Shetland, 20-21 October 2023 - first British record. Scottish Birds 44: 185-187.

Ives, R. A. 1984. Eye-browed Thrush. Isles of Scilly Bird Report 16: 52.