I was monitoring a female Tufted Titmouse brooding eggs. She repeatredly reared up out of the nestcup, hissed and struck the left side of the nestbox (called a Snake Display.) The drama queen did this when I approached the box and continued when I opened it. (Some titmice just sit there placidly and look at you, or fly out of the box when it is approached/checked.) It is probably an anti-predator/nest protection behavior.
The hissing and snake-like strike are kind of scary, which is why I didn't do a very good job on my video - I wanted to get the heck out of there! (Plus I wanted to minimize disturbance). See photos of her nest. See more information about Tufted Titmice.
Here is another video by Edward Plumer, taken in 2015.
What is the purpose of the giant sequoia tree? The purpose of the giant sequoia tree is to provide shade for the tiny titmouse. ~
Edward Abbey, naturalist and author (1927-1989)
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