URBAN SPARROWS. “Subsequently, a gradual decline from 1945 to 1975 is followed by a rapid decline from about 1990/91 to 2001.”
https://www.britishbirds.co.uk/wp-content/uploads/article_files/V96/V96_N09/V96_N09_P439_446_A004.pdf
linkedin post 2022-06-29 05:12:48
Nigel Fleming
September 21, 2022