Most Passerines only hold juvenal plumage for a few weeks, quickly molting to a more adult-like plumage soon after they fledge and before fall migration. It’s a plumage that is seen almost entirely on the breeding grounds, but the breeding grounds (and fledging time) of many birds overlaps broadly with the fall migration of others, […]
Juvenal plumage of songbirds: Gray Catbird Read More »
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 »
First Glance A quick judgment of the ground color of the breast and eyebrow stripe will separate most waterthrushes: bright white on Louisiana, yellowish on Northern. A yellowish waterthrush is definitely a Northern, while a whitish bird could be either species. Next look at the shape of the eyebrow stripe, which broadens to the rear
Identification of Waterthrushes Read More »
Identifying the white herons and egrets can be a challenge. We must rely mainly on structure, behavior, and the color of bare parts like bill and legs, because plumage offers very little in the way of field marks. One aspect of plumage can be very helpful, however. By looking at the shape and condition of
Determining the age of white egrets and herons in late summer Read More »
The flippant answer is “…because they look alike”, and they can be very alike. Most of what you read about yellowlegs will tell you to look at bill length to distinguish the species. The bill of Greater Yellowlegs is actually longer (50 mm or more, compared to Lesser’s 40 mm or less) but birders deal
Why are Yellowlegs hard to identify? Read More »
Thanks to reader Skip Pothier for sending in these photos. They show a Purple Finch with yellow color instead of red. My first thought was to call it a male that didn’t develop the full red pigment (a similar variant due to poor diet and/or poor health is fairly common in male House Finches) but
A Yellow Purple Finch in Ontario Read More »
Here is a photo of a white heron, taken by Constance Mier on the main shoreline of Biscayne Bay National Park, near Miami, Florida, on May 25, 2012. You can see more of Constance’s photos at her webpage: http://cmierphotoandfitness.net/myphotos.html [mtouchquiz 49]
After my post a few days ago about the unusual Cattle Egret in Florida, I heard from two people with interesting observations to add. Robert Edgar and Sarah McKenzie sent the photos featured here and said “We photographed a very similar bird on 1 May 1995 at a breeding colony in the Nile Valley, Egypt.It
More unusual Cattle Egrets Read More »
In late April 2012, Roy Halpin found and photographed an entirely buff-colored Cattle Egret in Saint Augustine, Florida. This is a particularly interesting bird because it provides an opportunity to consider the unusual nature of Cattle Egret coloration, as well as the identification of Cattle Egret subspecies. Coloration in Cattle Egrets To understand this bird’s
An unusual Cattle Egret in Florida Read More »
The next part of my introduction to learning bird songs is now up (click here). Birds can hear a lot “faster” than we can, however, and consequently can extract a lot more information from the very rapid series of notes. The differences are there, and a Chipping Sparrow does not get confused by the songs
Bird Song ID series continues – Eastern Trills Read More »