Distinguished ornithologist associated with the Academy of Natural Sciences of Philadelphia. Wrote Birds of the West Indies: An Account With Full Descriptions Of All The Birds Known To Occur Or To Have Occurred On The West Indian Islands, introducing birders to the Grand Cayman Thrush, Semper's Warbler, Grenada Dove, and the Puerto Rican Nightjar. First published in 1936, the second edition (1947) was titled Field Guide To Birds Of The West Indies: A Guide To All The Species Of Birds Known From The Greater Antilles, Lesser Antilles and Bahama Islands. The book is still in print by the Peterson field guide company under the title, Birds of the West Indies*.

Ian Fleming acquired the name of his character from seeing this book.

*The book appears in the James Bond film, Die Another Day, when Bond briefly poses as an ornithnologist.