USFWS Circular 16: Migration of Birds (1950), by Frederick C. Lincoln 65173 [Link: https://www.gutenberg.org/6/5/1/7/65173 ] [Files: 65173-0.txt; 65173-h.htm]
Thanks to Tom Cosmas from materials made available on The Internet Archive. Regards, Al
USFWS Circular 16: Migration of Birds (1950), by Frederick C. Lincoln 65173 [Link: https://www.gutenberg.org/6/5/1/7/65173 ] [Files: 65173-0.txt; 65173-h.htm]
Thanks to Tom Cosmas from materials made available on The Internet Archive. Regards, Al