Polioptila caerulea
The Blue-grey Gnatcatcher (Polioptila caerulea) is a diminutive and highly energetic songbird, measuring only 10-13 cm (4-5 inches) in length with a wingspan of 16 cm (6.3 inches) and weighing a mere 5-7 grams. Its sleek appearance is characterized by soft blue-grey upperparts, pristine white underparts, and a noticeably long, slender black tail prominently edged with white, which it constantly twitches and flicks. Distinctive field marks include a thin, needle-like bill, a conspicuous white ...
This adaptable species primarily inhabits open woodlands, deciduous or mixed forests, riparian thickets, and scrubby areas. It prefers habitats with a broken canopy and a dense understory, typically found at low to moderate elevations.
The diet of the Blue-grey Gnatcatcher consists almost exclusively of small arthropods, including spiders, caterpillars, beetles, flies, true bugs, and insect eggs. They primarily forage by gleaning insects from foliage and bark, or by performing short, agile aerial hawking flights.
Blue-grey Gnatcatchers are tirelessly active diurnal foragers, constantly flitting through foliage and branches with their tails often cocked and flicking. They employ a combination of gleaning, hovering, and short hawking flights to capture insects from leaves, twigs, and even in mid-air, someti...
The breeding range of the Blue-grey Gnatcatcher spans broadly across the eastern and central United States, extending into southeastern Canada, and discontinuously through the western US, including California, Arizona, and Utah. Southward, breeding populations reach into northern Mexico. During t...
Least Concern
- The Blue-grey Gnatcatcher builds one of the smallest and most exquisite nests of any North American bird, often only 2 inches across and 1.5 inches deep. - Their nests are famously camouflaged with lichen and bits of bark, all bound together with spider silk, making them incredibly difficult to...