Habitat: Yellow Warblers nest in shrubby growth by swamps and watercourses, in wet scrub, tree foliage, mangroves, gardens, shrubberies and berry patches. Distribution: The migrant warbler breeds in North America and migrate to Middle and South America during winter. They are also reported from Peru, northern Bolivia and Amazonina Brazil. Natural History Notes: The migrant warbler is widespread and is rarely caught singing in Panama. The resident warbler has a similar behavior than the migrant warbler, except that its habitat is much more restricted. Like the other warblers, this species is insectivore and will feed on insects and spiders. Conservation status according to IUCN 2008 Red list: Least Concern (LC). It is a latitudinal migratory species. Characteristics: The total length of this species varies between 4.5 inches and 5 inches (measured from tip of bill to end of tail). This species has two forms: the American migrant form (true Yellow warbler), and the resident form (Mangrove warbler). The male Yellow warbler has a plumage mostly yellow with a more olive coloration on the back. The wings and the tail are gray, but we can see the the wings are tipped yellow and the wings also show yellow patches. Then, the breast and the flanks show some chestnut stripes. The male Mangrove warbler looks different and has the head, throat and chest all chestnut colored.
