X

David Sibley

Updated app for iPhone

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 French, Spanish, or Latin instead of English, the latest AOU taxonomy including splits of Scripps’s and Guadalupe Murrelet, new audio for

Updated app for iPhone Read More »

Posture and shape distinguishes male and female Dark-eyed Juncos

Backyard Bird Discoveries While watching a small flock of juncos at my bird feeder on December 17, 2012, I noticed one particularly brownish female. Considering subspecies and watching it a little further I noticed that it seemed more active and alert, darting around quickly and holding its body more upright than the other juncos. Could this

Posture and shape distinguishes male and female Dark-eyed Juncos Read More »

My Pen-and-ink technique

With the publication of the revised edition of Hawks in Flight, I wanted to post a little bit about my drawing technique with pen and ink. I’ve always enjoyed black-and-white drawing. I remember being in third grade and spending hours looking at Earl Poole’s ink drawings in James Bond’s “Birds of the West Indies”. A few

My Pen-and-ink technique Read More »

In search of Spoon-billed Sandpiper

Join me on a WINGS/Heritage Expeditions cruise 21 June to 4 July 2013 to search for nesting Spoon-billed Sandpipers in Siberia. I’ve always been fascinated by Siberia. Growing up in the lower 48 states I dreamed of seeing birds like Steller’s Sea-Eagle, Siberian Rubythroat, even Middendorff’s Grasshopper-Warbler, and the crowning jewel of the Siberian specialties

In search of Spoon-billed Sandpiper Read More »

Distinguishing immature (white) Little Blue Heron from Snowy Egret

These are the only regularly occurring herons that are truly difficult to identify, as immatures of these two species are variable in bare-parts color and distinguishing them can require very careful study. The best clue is foraging posture, which can be seen at any distance and is very reliable. Most individuals are fairly easily separated

Distinguishing immature (white) Little Blue Heron from Snowy Egret Read More »