The Avon List

By the start of 2023, and the move to IOC taxonomy, the Avon list stood at 346 species, with another three only identified to genus (a Fregatta storm-petrel, a Tropicbird sp and one of the Subalpine Warbler complex). Click this link to see the Avon List.

However, seven of those have not been recorded for at least 100 years and a further eight not for at least 50 years. 

Not recorded for over 100 years 

Baillon’s Crake (1840)  Ivory Gull (c1864) White’s Thrush (1871) Sooty Tern (1885) Pallas’s Sandgrouse (1888) Two-barred Crossbill (1895) Red-breasted Goose (1909) 

Not recorded for over 50 years 

Black Grouse (1922) Great Snipe (1950) Bridled Tern (1958) Gyrfalcon (1962) Arctic Warbler (1965) Little Crake (1967) Nutcracker (1968) Pied-billed Grebe (1968) 

A further 18 species have not yet been recorded this century: 

Rough-legged Buzzard (1974) Roller (1976) Greater Sandplover (1979) Melodious Warbler (1979) Lesser Grey Shrike (1982) Marsh Sandpiper (1984) Terek Sandpiper (1986) Broad-billed Sandpiper (1988) Wilson’s Phalarope (1988) Cirl Bunting (1991) Icterine Warbler (1992) Black Stork (1992) Black-winged Pratincole (1993) Yellow-rumped Warbler (1994) Killdeer (1996) Black-throated Thrush (1996) Taiga Bean Goose (1998) Aquatic Warbler (1999) 

This century 312 species have been recorded, with an average of 224 species a year (highs of 237 in 2011 and 2012 and a low of 215 in 2018) but only 171 species have been recorded every year. Various other species have been recorded in Avon but there was doubt about whether the bird was of a wild origin. 

Species Previously on the Avon List 

Species not considered of wild origin 

Unproven Records