Long-tailed Duck: 1980s winter atlas
Sunday, October 9, 2011 at 9:10AM
Pembrokeshire Avifauna committee in 1980s BTO winter atlas, GHR, Long-tailed Duck

 

The BTO winter atlas showed that Long-tailed Ducks were present in several coastal and estuarine 10km squares during the winters of 1981-82, 1982-82 and 1983-84.

 

The coloured 10km squares represent 1-2 birds seen in a day.

 

Graham Rees

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