David Sibley has an interesting article on his blog today, working through crossbill identification with the help of Nathan Pieplow.
Interesting stuff: http://www.sibleyguides.com/2010/09/red-crossbill-call-types-act-like-species/ -- Scott Scott Severs Longmont, CO http://groups.yahoo.com/group/co_odes/ -- You received this message because you are subscribed to the Google Groups "Colorado Birds" group. To post to this group, send email to cobi...@googlegroups.com. To unsubscribe from this group, send email to cobirds+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/cobirds?hl=en.
