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Peter Pyle on Sage Sparrows 20 Aug 2013 | 09:11 pm
The most significant change for North American birders in the 2013 AOU Checklist supplement is the split of Sage Sparrow into two species: Sagebrush Sparrow and Bell’s Sparrow. In this arrangement Bel...
Another odd Snowy Egret, or a hybrid? 22 May 2013 | 08:53 pm
Recently on Cape Cod, Massachusetts, Mary Keleher noticed an egret with two long head plumes, and took a couple of photos. This bird matches well with the ones I discussed in 2011 in a previous blog p...
Flycatcher identification by the calendar 12 Apr 2013 | 10:54 pm
Here are some eBird maps showing all records for the month of April for several species of small flycatchers in eastern North America. A glance at these maps will show which species are possible in yo...
The white eyelid of American Dipper 10 Apr 2013 | 03:21 am
American Dipper showing off its white eyelid. Photographed near Cody, WY, March 2013, by David Sibley. It’s one of the first things people notice when they get a good look at a Dipper – the eyelid fl...
Pairs as an aid to hawk identification 4 Mar 2013 | 08:44 pm
Two Red-tailed Hawks in a single tree. Modified photo by David Sibley. By the end of February, even in cold and snowy Massachusetts, Red-tailed Hawks are courting and forming pairs in preparation for...
Sibley eGuide for Kindle Fire HD coming within days 14 Feb 2013 | 09:29 pm
Some of you had noticed that the Sibley eGuide was not in the Kindle store any more. Apparently the new Kindle Fire HD tablet required changes in the app, but those are now completed, the app has been...
A video bird quiz 14 Feb 2013 | 08:19 pm
The answer is at the end of the video, and in the text below. It has been a relatively mild winter in Massachusetts, but the blizzard of Feb 2013 put over two feet of snow on the ground, effectively ...
Dark heron/egret 5 Feb 2013 | 08:04 pm
Can you identify the two birds in this photo? Photographed by William Horden in Big Cypress Preserve, FL, Dec 2012. Used by permission. You can see William's more artistic work at his website: http:/...
Updated app for iPhone 5 Feb 2013 | 02:38 am
The Sibley eGuide to Birds app for iPhone has been updated. This update adds thumbnail images of every species in the scrolling list and in search results, the option to display common names in Frenc...
Quiz 54: Head patterns 3 Jan 2013 | 01:29 am
The three photos below show a Song Sparrow as it turns its head. Your challenge is to locate the plumage marking known as the lateral throat stripe in each photo. Photos ©David Sibley. Sep 2012, Conc...
