Part 3 of my introduction to learning bird songs is now up (click here). In this discussion, tempo refers to the overall “pace” of the song, the number of notes or phrases per second. We describe this as fast or slow, and over the course of the whole song the tempo can be steady or […]
Tempo, and bird song identification Read More »
Pitch is simply our perception of the frequency (or wavelength) of a sound, which we describe as high to low. Birds’ range of hearing is similar to our own, and bird song covers the full range to the limits of human hearing, from the lowest hooting sounds of Great Gray Owl or Spruce Grouse to
Pitch, and bird song identification Read More »
Molt is the process of feather replacement. All birds do it; they have to grow new feathers once or twice a year to stay warm, dry, and airborne, and in many cases they grow differently colored feathers at different seasons to match their surroundings or to impress others of their species. Among the small songbirds,
The annual plumage cycle of a male American Goldfinch Read More »
The still-unidentified Elaenia, found by Ethan and Aaron Gyllenhaal in Illinois, has provided one of the most exciting and interesting bird identification challenges in recent years. It is either a first North American record of Small-billed Elaenia, or second North American record of White-crested (or third if an earlier record from Florida was White-crested). Both
In praise of mystery Read More »
I was musing on the value of learning bird topography this morning, wondering why it is so important to know the greater coverts and supercilium and all the rest. The easy answer is that it gives us a framework to describe the color patterns of birds, but I think there’s even more to it than
Bird Topography – How it helps identify birds Read More »
Update: For future visitors I should explain that I posted this as an April Fool’s Joke. This video converts the voice descriptions from the Sibley Guide to Birds from text-to-speech, and the results are pretty funny, and maybe even a little bit educational. Today I’m very pleased to announce my latest major project. It’s a bird
Announcing my new video guide to bird songs! Read More »
Just released and available for download at the Blackberry App World – The Sibley eGuide can now be used on any Blackberry Playbook tablet. All of the features of the eGuide on other platforms are included here: compare any two images, maps, or sounds on a single screen filter by state and by common species
The Sibley eGuide is now available for Blackberry Playbook Read More »
A pale and grayish female bluebird found in North Carolina recently (March 2012) provided a very interesting identification challenge. The plumage colors were a good match for a typical female Mountain Bluebird, and that is how it was first identified. North Carolina has only one previous report of Mountain Bluebird, so this bird received a
Identification of female bluebirds by wing structure Read More »
Most birds have a very different pattern on the upperside and underside of their wings. On the coverts (the leading edge of the wing) this is easily explained because we are looking at entirely different feathers above and below. On the primaries and secondaries, however, there is just a single layer of feathers. How can
Wings, above and below Read More »
Just released and available for download at the Windows Phone Marketplace – The Sibley eGuide can now be used on any device running Windows Phone 7. All of the features of the eGuide on other platforms are included here: compare any two images, maps, or sounds on a single screen filter by state and by
Sibley eGuide for Windows Phone 7 – now available Read More »