@book{bhlitem32643, title = {British birds }, copyright = {NOT_IN_COPYRIGHT}, url = {https://www.biodiversitylibrary.org/item/32643}, note = {https://www.biodiversitylibrary.org/bibliography/7919}, publisher = {London, Longmans, Green, and co, 1921}, author = {Hudson, W. H. (William Henry), and Beddard, Frank E. (Frank Evers),}, year = {1921}, pages = {423}, keywords = {59.82(42)|Birds|Great Britain|}, }