The following list details corrections made in 2001 in the 4th printing of The Sibley Guide to Birds. If you own a 1st or 3rd printing you can make these corrections to your book. A “quick index” was added to the book in the 4th printing. If you’d like to download a quick index for […]
Corrections to 4th printing of the Sibley Guide to Birds Read More »
One of my regular birding spots is a small farm field near my house in Concord, Massachusetts. I can walk around the entire place in about 20 minutes, but I usually take about two hours and get in some good sparrow-study. The clump of taller vegetation shown here is always a good spot to study
Probability in bird identification Read More »
Illustration of the Red-footed Falcon perched. The smooth gray color is unlike any North American Falcon. Old juvenal wing and tail feathers are slightly brownish and barred, while adult feathers will be uniform blackish. Juvenal feathers are obvious on the outer tail, the primaries (molt reveals the boldly barred inner web of one outer primary),
Identification of the Martha’s Vineyard Red-footed Falcon Read More »