de L. (2005) The decline of the Ring Ouzel Turdus torquatus in Britain: evidence from bird observatory data. Ringing & Migration 22, 199-204.Burfield IJ, Brooke MdeL (2005) The decline of the Ring Ouzel Turdus torquatus in Britain: evidence from bird observatory data. Ring Migr 22:199-...
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Capsule: There were up to 6348 Ring Ouzel territories in the UK in 2012.Aims: To produce estimates of the size of the Ring Ouzel breeding population in the UK and its constituent countries.Methods: A stratified random selection of tetrads was surveyed within the known breeding range, except ...