- 3.9–4.3 in
- 6.3 in
- 0.2–0.2 oz
- Gobemoucherons Gris-bleu (French)
- Perlita Común, Perlita Grisilla (Spanish)
- The Blue-gray Gnatcatcher is the northernmost-occurring species of gnatcatcher, and the only truly migratory one. Most members of its genus are resident in the Neotropics.
- The soft, rambling song of the Blue-gray Gnatcatcher usually contains some mimicked songs of other bird species.
Breeds in variety of deciduous wooded habitats from shrubland to mature forest, especially near water.
Small insects and spiders.
- Clutch Size
- 3–6 eggs
- Egg Description
- Pale blue with some small dark spots.
- Condition at Hatching
Open cup with high walls, made of spider webbing or caterpillar silk, covered with lichens or bark flakes. Lined with grass stems, bark strips, plant down, hair, feathers, or other fine fibers. Placed far out from trunk on tree limbs.
Feeds near tips of branches, constantly moving through foliage. Moves tail continuously, which may flush insects.
Expanded breeding range northward over last century. Common, with no significant population increases or decreases.
- Ellison, Walter G. 1992. Blue-gray Gnatcatcher (Polioptila caerulea). In The Birds of North America, No. 23 (A. Poole, P. Stettenheim, and F. Gill, Eds.). Philadelphia: The Academy of Natural Sciences; Washington, DC: The American Ornithologists' Union.