TWO GROUPS. “There is no evidence of any significant interchange of House Sparrows between farmland and urban populations, and it is almost certain that the factors for the declines are largely unrelated.”
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