its status is not well known, it does not appear to be seriously threatened by habitat destruction or other human activities, unlike many migratory warblers. It is a fairly common bird, among the most common in some localities. Because it is common and not in rapid decline, it is assessed as Least Concern on the IUCN Red List. Behavior The black-throated gray warbler is usually approachable, and can easily be observed while foraging. Despite this, it is poorly known, especially in its breeding behavior, of which Birds of North America said "almost no information is available". It forages, often in flocks with other species. It feeds on insects gleaned on low branches, especially caterpillars. The nest is usually placed on a horizontal tree branch or in a shrub, a few metres above the ground. The nest is an open cup constructed of grass stalks and other fibres, and lined with feathers and hair. The female lays three to five pinkish eggs with brown dots from May to July. Incubation and fledging periods are unknown. This species has been recorded giving a distraction display, pretending to be injured to distract predators from its nest. Both parents feed the young, though the female may do so more frequently. References Works cited External links Black-throated Gray Warbler at All About Birds Black-throated Grey Warbler at the Internet Bird Collection black-throated gray warbler Native birds of Western Canada Native birds of the Western United States black-throated gray warbler black-throated gray warbler