How do frogmouths use a broken-branch posture to avoid detection?

To avoid detection during the day, frogmouths utilize a specialized alarm posture that allows them to blend seamlessly into their environment. When alarmed, these birds flatten their plumage and stretch their bodies upward in a stiff, rigid stance, effectively mimicking the appearance of a dead branch or a broken tree stub.12

This camouflage is enhanced by the frogmouth's natural coloration, which is typically streaked and mottled in shades of reddish brown or gray to resemble tree bark. By adopting this broken-branch posture, the bird becomes nearly indistinguishable from the wood upon which it rests, providing a highly effective defense against potential predators.32