Cerulean Warbler
Setophaga cerulea
eBird describes the Cerulean Warbler like this: Brilliant sky-blue warbler of the high canopy. Prefers mature deciduous forest, either in riparian areas or dry mountain ridge-tops. Tends to stay high in the canopy; thus, can be difficult to see blue color. From below, look for white throat and belly, thin necklace, and dark streaks on sides. Female is a unique muted turquoise with pale eyebrow and blurry streaks on sides. Immature birds show yellow wash on underparts. All plumages have bold white wingbars. Easiest to detect in spring and summer by its loud buzzy song, similar to Black-throated Blue but usually richer and more distinctly three-parted; much lower-pitched than Blackburnian Warbler. Winters primarily on the east slope of the Andes from Venezuela to Bolivia. All About Birds adds this descriptive information about the Cerulean Warbler: A warbler the color of the clear blue sky hops sky high through the upper canopy of eastern forests. That’s the male Cerulean Warbler, a brilliant blue songbird with a cerulean neck band and streaks down the sides. Females are equally well-dressed, wearing a dusky hue of blue-green. These long-distance migrants breed in mature eastern deciduous forests and spend the winters in the Andes in South America. Their populations have declined dramatically due to habitat loss.
I met my first Cerulean Warbler at the central drip at Sabine Woods on the afternoon of April 20, 2021. I had seen on eBird that this bird had been seen there several days before, and I was hopeful I would encounter one, which I did.
“Cool Facts” About the Cerulean Warbler From All About Birds:
- On the wintering grounds in South America the Cerulean Warbler is usually found in mixed-species canopy flocks, associating with tropical tanagers and other resident species.
- When renesting after a failed nest, the female often uses spiderweb from the old nest to start construction on the new nest. Fresh lining is gathered for the new nest, but spiderweb may be too valuable and hard to find to waste.
- The female Cerulean Warbler has an unusual way of leaving a nest after sitting on it a while. Some people call it “bungee-jumping.” She drops from the side of the nest, keeping her wings folded to her sides, and opens her wings to fly only when she is well below the nest.