Wednesday, September 30, 2020
Shadow Darner
Sunday, September 27, 2020
Summer Swallows



Saturday, September 26, 2020
Rufous Hummingbird

Thursday, September 24, 2020
Pine Siskin
Wednesday, September 23, 2020
Red-winged Blackbird
Tuesday, September 22, 2020
Northern Shoveler
Sunday, September 20, 2020
American Pipit
Saturday, September 19, 2020
Golden-crowned Sparrow
Friday, September 18, 2020
Belted Kingfisher 2
Wednesday, September 16, 2020
Glaucous-winged Gull
Tuesday, September 15, 2020
Cooper’s Hawk
Our backyard forest treetops resounded with chattering birds on 12 September 2020. Such a racket is often a sign of an owl nearby. I scanned the woods and was surprised to see a Coopers Hawk perched on an exposed tree branch. Its crop bulged—I hope its prey was not one of my banded songbirds. Cooper’s and Sharp-shinned hawks can be difficult to tell apart, especially when the bird is some distance away. One field mark is the nape—gray in the Cooper’s, black in the Sharp-shinned. The Sharp-shinned is a smaller raptor than the Cooper’s and has a rounder, less square head profile. The tail shape also differs, but, I could not see the tail. I hope this hawk does not stick around my bird feeders.
Monday, September 14, 2020
Belted Kingfisher
Sunday, September 13, 2020
Blue Dasher
Friday, September 11, 2020
Dragonfly Books
I have updated my dragonfly book. Now it is two volumes, the first devoted to damselflies, the second, to dragonflies. The critters in the book include species Erika and I have seen in our travels through the United States and during a dragonfly tour of Costa Rica. Accompanying text covers identification, ecology, and behavior. Two .pdf files, compatible with most, if not all, platforms, are available for $9.99 each. Hardcopy formats can also be purchased, but, since they are produced on a per-order basis, they tend to be a bit pricy. Details and sample pages can be found at either of these two links:Wednesday, September 9, 2020
Townsend’s Chipmunk
Monday, September 7, 2020
Red-breasted Sapsucker

This post might be titled “Sapsucker 15, Bander 0.” I took this photo on 6 September 2020. This bird was a retrap—I first banded it on 17 May 2019, almost a year and a half ago. (The oldest Red-breasted Sapsucker, banded and recovered in British Columbia, was at least five years old (All About Birds).) Clearly I got the worse end on this second encounter with my sapsucker. My son, Jon, not-so-sympathetically remarked “clearly the sapsucker remembered you.” This encounter also reminds me of the definition of a field biologist—one who does not believe in the germ theory of medicine.

Sunday, September 6, 2020
European Starling
Friday, September 4, 2020
Pied-billed Grebe
On 1 September 2020, along the Chehalis Bike Trail just north of Olympia, Erika and I encountered a young Pied-billed Grebe. The bird displayed a bunch of self-maintenance behaviors, including stretching and preening. Grebes are interesting birds because they consume lots of feathers. One hypothesis is that grebes continually molt their flank feathers all winter, providing a constant flow of new feathers. Grebes also do a lot of preening just to keep their feathers water-proof.
Ingested feathers are found internally in two locations. Most are found in the stomach. I always thought that these feathers protect the digestive lining from being punctured. Most fish bones, however, completely dissolve in the stomach. Muller and Storer (2020) suggest that the feathers provide substance to the stomach contents, which grebes use to make pellets that they “spit” up. The pellets keep parasites from building up in the upper digestive tract. Feathers are also found at entrance to the small intestine, where they keep hard pieces of prey from entering the intestines.Thursday, September 3, 2020
Great Egret
Tuesday, September 1, 2020
Paddle-tailed Darner


Unless you net them, darners are difficult to identify. I was confident, and Dennis Paulson confirmed, that this dragonfly is a Paddle-tailed Darner. Its 10th abdominal segment has a blue spot. The lines on the thorax sides do not have backward sloping extenstions. But most of all, the abdominal extensions on this beast are wicked long—spined and broad. Dennis assured me that this species is common in western Washington, emerging relatively late in the season, after the first flush of Blue-eyed Darners. Paddle-tailed Darners are Western dragonflies, found from Mexico and southwestern Canada east into the central Great Plains.























