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Titre :	Report on scarce migrant birds in Britain in 2017 Part I: non-passerines (2019)
Auteurs :	Steve White, Auteur ; Chris Kehoe, Auteur
Type de document :	Article
Dans :	British Birds (112(8) AUG 2019)
Article en page(s) :	444-468
Résumé :	This report summarises the non passerine scarce migrant birds recorded in Britain in 2017. Several wetland and seabird species appeared in record, or near-record numbers, though the factors influencing each species appear to differ. Black winged Stilt Himantopus himantopus makes its first appearance in this report, with a record 59 birds; while Cattle Egret Bubulcus ibis, with a staggering 737 birds, has now become too widespread to monitor accurately and makes its final appearance here.The total of 174 Wilson's Storm-petrels Oceanites oceanicus eclipsed the previous high of 103, while that of 3,873 Cory's Shearwaters Calonectris borealis was the Alpine Swift Tachymarptis melba second highest on record.There were good numbers of White-billed Divers Gavia adamsii (total of 38 birds/2nd best year on record), Grey Phalaropes Phalaropus fulicarius (503/4th), Sabine's Gulls Xema sabini (350/4th), White-winged Black Terns Chlidonias leucopterus (29/4th) and Red-necked Phalaropes Phalaropus lobatus (60/3rd), the last perhaps reflecting the increasing UK breeding population. Faring less well were Rough-legged Buzzard Buteo lagopus and Spotted Crake Porzana porzana, while Lesser Scaup Aythya affinis and Alpine Swift Tachymarptis melba remain among the rarest species in this section of the report.

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