Oregonian
Well-known member
There is an interesting convergence in the plumage of American Dipper (Cinlclus mexicanus) and Torrent Tyrannulet (Serpophaga cinerea) where they coexist in eastern Central America. American dippers have a uniform gray plumage in most of their range in North America. But the form in Costa Rica and Panama, C. m. ardesiacus, has dark wings contrasting with pale back and breast, as does the Torrent Tyrannulet. The photos attached here are from Reserva Forestal de Fortuna, Hornito, Panama, taken on the 12th and 13th of February.