Correctly identify each numbered bird for a chance to win a copy of The Crossley ID Guide: Britain and Ireland.
[This will open a pop up quiz that will collect your answers and contact information]
One winner, drawn at random, will receive a copy of The Crossley ID Guide: Britain and Ireland. Participants must be at least 18 years old to enter. Only one entry per person. All entries must be received by January 1, 2014.
A PDF of the contest entry form can be downloaded here: http://blog.press.princeton.edu/wp-content/uploads/PR/crossleycontest.pdf and submitted by email to firstname.lastname@example.org or fax to +44 1 993 814504.