BirdForum is the net's largest birding community dedicated to wild birds and birding, and is absolutely FREE!

Register for an account to take part in lively discussions in the forum, post your pictures in the gallery and more.

Reply to thread

Message: <blockquote data-quote="Acanthis" data-source="post: 1360170" data-attributes="member: 5750">Pim Edelaar?I've sent all my recordings with GPS data, and edited for swearing etc to Sander Lagerveld at Leiden Uni. I think they're aim ultimately is to build up a complete picture of crossbill types and movements right across the Palearctic. Huge job!! It's good to be able to contribute even a tiny amount to such a fascinating project.</blockquote>