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.
Ivory-billed woodpecker is the common name of several species of woodpecker distinguished by having a bill that resembles ivory 1  : Campephilus, a genus of woodpecker sometimes called the Ivory-billed woodpecker, although the term is more commonly used to describe the American and Cuban ivory-billed woodpeckers. 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.