The sedge warbler is mostly insectivorous. The most common breeding birds are the willow warbler, common chaffinch, and redwing. The American redstart is a smallish warbler. The endangered golden-cheeked warbler and black-capped vireo depend on different successional stages of this vegetation. The blackcap is a mainly grey warbler with distinct male and female plumages. Somewhat higher diversity of species are known from the sparrow and warbler families. The Cape May Warbler, a small songbird, takes it name from this location. These include the horned lark, orange-crowned warbler, and house finch. The American yellow warbler is found in many areas as is the green heron. Climate change appears to be affecting the migration pattern of the garden warbler and blackcap. These species include the blackpoll warbler and Bicknell's thrush. The black-throated blue warbler, a North American bird, is another example. It is the only North American warbler with this striking plumage. The prothonotary warbler is long and weighs . It is often found near water, unlike the willow warbler which tolerates drier habitats.