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May 27, 2010

Bluebird Trail - 5/27/10

Jen and I numbered the Bluebird houses recently so that we could track the activity better. It looks like all of the boxes are occupied at this point. Some of the House Wren nests could possibly be decoys, but all of the nest sites appear to show signs of activity.

Box 1 - House wrens - 0 eggs
Box 2 - House wrens - 0 eggs
Box 3 - Mountain Bluebirds - 3 eggs (blue)
Box 4 - House wrens - 0 eggs
Box 5 - Mountain Chickadees - 4 eggs (white)
Box 6 - House wrens - 2 eggs (pink)
Box 562 - Mountain Chickadees - 5 eggs (white)
Box 7 - Tree swallows - no nest yet.
Box 8 - Western Bluebirds - 2 eggs (blue)

Mountain Bluebird eggs: 3
Western Bluebird eggs: 2
House Wren eggs: 2
Mountain Chickadee eggs: 9

Total eggs: 16

(Photos in the extended entry.)

Above: Box 1 - House wrens - 0 eggs

Above: Box 2 - House wrens - 0 eggs

Above: Box 3 - Mountain Bluebirds - 3 eggs (blue)

Above: Box 4 - House wrens - 0 eggs

Above: Box 5 - Mountain Chickadees - 0 eggs. (Update: Later in the day, I realized that the Mountain Chickadees were hiding their eggs under a layer of fluff. I'm not sure if this is for warmth or predaction, but Jen and I poked around and found four white eggs.)

Above: Box 5 - Mountain Chickadees - 4 eggs (white). Jen and I poked around and found some eggs afer all. Clever birds.

Above: Box 6 - House wrens - 2 eggs (pink)

Above: Box 562 - Mountain Chickadees - 5 eggs (white). At first, I didn't see any eggs, but I got suspicious that neither of the Mountain Chickadee nests had any eggs yet. So, I poked around a bit and found five white eggs hidden in the nest.

Above: Box 7 - Tree swallows - no nest yet.

Above: Box 8 - Western Bluebirds - 2 eggs (blue)

Above: Box 8 - Female Western Bluebird sitting on 2 eggs. Initially, I thought that she was laying another egg. But I don't beleive she laid an egg today. She could possibly be incubating a clutch of only 2 eggs, but this would be an unusually small clutch size.

Posted by Rob Kiser on May 27, 2010 at 11:21 PM

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