Tag Archives: cavity

My Little Chickadee

On March 29th, I finally got around to putting up the chickadee nest box I bought last year. Like with my flicker box, I targeted the Black-capped Chickadee as a potential yard tenant based on the fact I had a handful of them already hanging around and eating from my bird feeder. Well, on March 30th, I noticed a chickadee going in and out of the box and on April 6th, the pair already had a complete nest!

Black-capped Chickadee at Belmar Park in Lakewood, CO, excavating a nest cavity. Both male and female chickadees will excavate. Photo by Jamie Simo.

There are 7 chickadee species in North America and all are cavity-nesters. When I lived in Virginia, my backyard chickadee was the Carolina Chickadee, which tends to have a more southerly range than the Black-capped Chickadees I now encounter. Like the Northern Flicker, the Black-capped Chickadee will readily use a nest box. Of  course, the chickadee is much smaller than the flicker, so it needs a smaller box. A good idea to keep birds like European Starlings and, especially, House Sparrows, away, is to buy or make a box with an entry hole too small for those birds to enter. I bought a hole guard made of metal to screw over the entry hole. The guard is 1 1/8 inches in diameter, which is perfect for the chickadees to squeeze through, but too small for those other bully birds.

A Black-capped Chickadee pulls fluff from a cattail to line her nest. Photo by Old Mister Crow. https://flic.kr/p/TFzMJx

Also unlike the Northern Flicker, which lays her eggs directly in the wood chips at the bottom of the cavity she’s chosen, the Black-capped Chickadee will build a nest inside her cavity of choice on top of the wood chips. The female constructs the nest using mosses, evergreen needles, bark, and other coarse materials¬†as a base, which she then lines with softer material like animal fur and plant fibers like milkweed fluff. Only the female chickadee incubates the eggs.

Because I didn’t realize the chickadees would be so quick to start nesting, I didn’t get a nest camera installed beforehand, but I’m planning on putting one up next year. In the meantime, I’ll try to document the nest attempt as best I can. Chickadees are more sensitive to monitoring than bluebirds, so I probably won’t be checking the box too frequently lest I cause them to abandon it.