Changes to Category C of the British List

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Abstract:

In its maintenance of the British List, the British Ornithologists’ Union Records Committee (BOURC) is responsible for assigning species to categories to indicate their status on the List. In 1995, the British Ornithologists’ Union (BOU) and the Joint Nature Conservation Committee (JNCC) held a conference on naturalized and introduced birds in Britain ( Holmes & Simons 1996). This led to a review of the process of establishment of such species and the terms that best describe their status ( Holmes & Stroud 1995) as well as a major review of the categorization of species on the British List ( Holmes et al. 1998 ). The BOURC continues to review the occurrence and establishment of birds of captive origin in Britain. This paper summarizes the status of naturalized and introduced birds in Britain and announces changes to the categorization of many on the British List or its associated appendices (Categories D and E):

Mute Swan Cygnus olor Categories AC change to AC2

Black Swan Cygnus atratus Category E* – no change

Greylag Goose Anser anser Categories ACE* change to AC2C4E*

Snow Goose Anser caerulescens Categories AE* change to AC2E*

Greater Canada Goose Branta canadensis Categories ACE* change to C2E*

Barnacle Goose Branta leucopsis Categories AE* change to AC2E*

Egyptian Goose Alopochen aegyptiacus Categories CE* change to C1E*

Ruddy Shelduck Tadorna ferruginea Categories BDE* – no change

Muscovy Duck Cairina moschata Category E* – alert JNCC

Wood Duck Aix sponsa Category E* – no change

Mandarin Duck Aix galericulata Categories CE* change to C1E*

Gadwall Anas strepera Category A change to AC2

Mallard Anas platyrhynchos Categories AE* change to AC2C4E*

Red-crested Pochard Netta rufina Categories AE* change to AC2E*

Ruddy Duck Oxyura jamaicensis Categories CE* change to C1E*

Black Grouse Tetrao tetrix Categories AE – no change

Western Capercaillie Tetrao urogallus Categories BC change BC3

Red-legged Partridge Alectoris rufa Categories CE* change to C1E*

Grey Partridge Perdix perdix Categories ACE change to AC2E

Common Pheasant Phasianus colchicus Categories CE* change to C1E*

Golden Pheasant Chrysolophus pictus Categories CE* change to C1E*

Lady Amherst's Pheasant Chrysolophus amherstiae Categories CE* change to C6E*

Black-crowned Night Heron Nycticorax nycticorax Categories AE* – no change

Sacred Ibis Threskiornis aethiopicus Category E – no change

Red Kite Milvus milvus Categories AC change to AC3

White-tailed Eagle Haliaeetus albicilla Categories ACE change to AC3E

Northern Goshawk Accipiter gentilis Categories AE* change to AC3E*

Rock/Feral Pigeon Columbia livia Categories AE* change to AC4E*

Rose-ringed Parakeet Psittacula krameri Categories CE* change to C1E*

Barn Owl Tyto alba Categories AE* – no change

Little Owl Athene noctua Category C change to C1

Document Type: Research Article

DOI: http://dx.doi.org/10.1111/j.1474-919X.2005.00470.x

Publication date: October 1, 2005

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