flicker

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Related to Northern Flicker: pileated woodpecker, mourning dove, downy woodpecker

flick·er

(flik'ĕr),
The visual sensation caused by stimulation of the retina by a series of intermittent light flashes occurring at a certain rate.
See also: flicker fusion, critical flicker fusion frequency.

flicker

A rapid, transient and intermittent photic discharge sensed in a visual field.

flicker

The visual sensation of alternating intervals of brightness caused by rhythmic interruption of light stimuli.

flicker

Perception produced when the retina is stimulated by an intermittent light stimulus which fluctuates between a frequency of a few hertz and the critical fusion frequency.
References in periodicals archive ?
For example, Northern Flickers and Hairy Woodpeckers aggressively defended their cavities from Red-headed Woodpeckers.
Nest site attributes and temporal patterns of Northern Flicker nest loss: effects of predation and competition.
In this study, we presented a model predator (red squirrel, Tamiasciurus hudsonicus) at nest sites of Northern Flickers to examine adult nest-defense behavior in relation to age, sex, brood size, body size, and body condition.
Ephemeral food resources and high conspecific densities as factors explaining lack of feeding territories in Northern Flickers (Colaptes auratus).
In fall you'll see Northern flickers, herons, kingfishers, downy woodpeckers, and lots of ducks (common goldeneyes, mallards, mergansers).
Magpies potentially could use many of the cavities created by nesting Northern Flickers (Colaptes auratus).
Among some of the significant birds seen in various spots, Buelow said, are "snow buntings and horned larks, swamps for eastern bluebirds, northern flickers and winter wrens, and back roads in the predawn for saw-whet owls.

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