Audubon’s Legendary Experiments

In his Ornithological Biography [1], John James Audubon describes two experiments that have become legends in the annals of ornithology. Both were ingenious ideas, but Audubon’s conclusions were misleading and …

Lumpers and Splitters

Almost everyone I know who is interested in birds has their favourite group, and the reasons for those favourites vary widely. For some, the difficulty—and their mastery—of field identification is …