This thrush's long complex song is a distinctive sound in the high forests of Mexico's Sierra Gorda Biosphere Reserve. Photo by Greg R. Homel
Already finished reading ÃÛèÖAPP's issue? Never fear, there's more where that came from. has plenty of bonus web content to keep you busy. To whet your appetite, here're a few recent additions to the site:
See and hear some of the amazing birds that live in Mexico's Sierra Gorda Biosphere Reserve in this companion to "," Scott Weidensaul's feature article on the region. Photographer and bird-o-phile even gets up close and personal with the cryptic bearded-wood partridge whose nuptial call he caught on tape.
The was a potent reminder that we share air space with birds. In this Q&A by senior editor Alisa Opar, the head of the Smithsonian Institution's explains how she and her team use clues from birds to crack mysteries like those surrounding plane crashes.
Antarctica is the last frontier with some major commercial potential when it comes to the organisms that live there. Justin Nobel talks about the issues surrounding bioprospecting in our southernmost continent.
Icebergs aren't just hunks of white ice--they can be green, too, and even striped, making them precious spectales, as Jeff Rubin reveals in this companion to his story, "."