verb. To quell is to stop or quiet something. An example of quell is to soothe someoneâs anger.
Overview. Black-backed Woodpecker: Small woodpecker with black back, black wings with white spots on flight feathers, barred flanks, white underparts. Head has a conspicuous white cheek mark and yellow crown. Tail is black with white outer tail feathers. Black bill is long and stout. Legs and feet are gray.
The ivory-billed woodpecker (Campephilus principalis) is one of the largest woodpeckers in the world, at roughly 20 inches (51 cm) in length and 30 inches (76 cm) in wingspan. It is native to the virgin forests of the southeastern United States (along with a separate subspecies native to Cuba). Cuban ivory-billed woodpecker (Campephilus principalis bairdii or Campephilus bairdii), now believed to be extinct. 2  American ivory-billed woodpecker (Campephilus principalis principalis or Campephilus principalis), described here.