Black Antshrike

The black antshrike (Thamnophilus nigriceps) is a species of insectivorous bird in subfamily Thamnophilinae of family Thamnophilidae, the "typical antbirds". It is found in Colombia and Panama. == Taxonomy and systematics == The black antshrike was described by the English zoologist Philip Sclater in 1869 and given its current binomial name Thamnophilus nigriceps. The black antshrike is monotypic. It and the cocha antshrike (T. praecox) are sister species. == Description == The black antshrike is 15 to 16 cm (5.9 to 6.3 in) long and weighs 23 to 24 g (0.81 to 0.85 oz). Members of genus Thamnophilus are largish members of the antbird family; all have stout bills with a hook like those of true shrikes. This species exhibits some sexual dimorphism. Adult males are almost entirely black. They have dark gray flanks and their underwing coverts and edges of the underside of their flight feathers are white. Adult females have a blackish gray head and upper breast with buff-white streaks. Their upperparts, wings, and tail are rufous-brown. Their lower breast and belly are gray with buff-white streaks and their crissum is unstreaked buff. The width of the streaks varies among individuals, and the amount of streaking increases from…