[cobirds] Extensive preview of 2nd ed. of Sibley Guide

A detailed look including multiple plates from the new guide. Enjoy!

www.birdwatchingdaily.com/blog/2013/11/20/first-look-david-sibley-describes-changes-to-look-for-in-his-revised-guide-to-birds

Download the official Twitter app here

--Scott

Scott E. Severs

Longmont, CO

scottesevers@gmail.com