WebWe analysed clutch size versus nest size in 153 broods of the Northern Flicker Colaptes auratus, a woodpecker using natural cavities in British Columbia, Canada.Larger volume cavities were less susceptible to predation and cavity size was positively associated with the age and body size of males and with the body condition of female parents. WebGeographic Variation in Clutch Size in the Northern Flicker (Colaptes auratus): Support for Ashmole's Hypothesis. October 1984; The Auk 101(4) DOI:10.2307/4086896. Authors: Walter D. Koenig.

Northern Flicker State of Tennessee, Wildlife Resources Agency

WebThe northern flicker or common flicker (Colaptes auratus) is a medium-sized bird of the woodpecker family. It is native to most of North America, parts of Central America, Cuba, … WebNorthern Flickers are large, brown woodpeckers with a gentle expression and handsome black-scalloped plumage. On walks, don’t be surprised if you scare one up from the … ski mountains near dc

Northern Flicker – Call Facts Diet Sound Feathers Eggs

Web1 de out. de 1984 · Abstract. The Northern Flicker (Colaptes auratus), a common hole-nesting North American woodpecker, exhibits a highly significant latitudinal increase in clutch size.Using preserved clutches and information on climatic conditions and breeding densities of confamilial species, I examined the hypothesis that this geographic trend is … WebThis bird is 30 to 35 cm in length (Palmer and Fowler 1975, Winkler et al. 1995). Its wingspan is 54.1 cm, tail length is 12.2 cm, and bill length is 4.2 cm (Palmer and Fowler … WebUsually excavates nest cavities in dead or diseased tree trunks and large branches. Eggs ovate and pure lustrous white in color. Clutch size for Yellow-shafted and Red-shafted Flickers range from 3 to 12, mean 6.5 eggs (Moore 1995). Near Fortine, egg dates range from April 29 to June 10; young in nest from May 6 to July 9. ski mountains open in new england