Yellow-bellied Sapsucker (Sphyrapicus varius) Science Article 6 abstract Power (1975, Science 189: 142) presented the theory of altruism in describing experiments designed to test it on wild Mountain Bluebirds (Sialia currucoides). He considered his results negative, but they are pertinent to observations I presented briefly (Kilham 1971, Wilson Bull. 83: 159) but not in detail, […]
Category: Piciformes
Sap tree feeding preference by Yellow-bellied Sapsuckers (Sphyrapicus varius) based ontree size and species in Cheboygan County, northern lower Michigan
Yellow-bellied Sapsucker (Sphyrapicus varius) Science Article 7 abstract To test for preference in choice of sap trees, the area surrounding an active YellowbelliedSapsucker (Sphyrapicus varius ) nest was surveyed using four randomly selected20 x 20m plots at the University of Michigan Biological Station in Cheboygan County,Michigan Amanda L. McLenon, unknown Download article download full text […]
Minimizing Yellow-Bellied Sapsucker Damage
Yellow-bellied Sapsucker (Sphyrapicus varius) Science Article 1 abstract The yellow-bellied sapsucker is a migratory woodpecker that feeds on a widevariety of orchard, shade, and forest trees. Instead of drilling holes to find insectslike other woodpeckers, sapsuckers drill holes in living trees to feed on sap andphloem tissues. Gayne G. Erdmann and Ralph M. Peterson, North […]
YELLOW-BELLIED SAPSUCKER, SPHYRAPICUS VARIUS, IN ALASKA
Yellow-bellied Sapsucker (Sphyrapicus varius) Science Article 3 abstract The Yellow-bellied Sapsucker( Sphyrapicus varius), which breeds in the temperate and boreal forests of interior North America, has not been reported previously from Alaska. However, recent observations show that it is currently a rare summer visitant and breeder in extreme east-central Alaska, and the presence of old […]
Sexual differences in physical condition in the White-backed Woodpecker Dendrocopos leucotos
White-backed Woodpecker (Dendrocopos leucotos) Science Article 1 abstract Body-mass and wing-length of adultWhite-backedWoodpeckers Dendrocopos leucotos were measured in 57 males and 55 females in Surnadal community in western Norway during November-June from 1985 to 2001. The mean physical condition (ratio bodymass : wing length) of reproducing females in coastal areas was better than of females […]
NOTES ON THE SWALLOW-WING, CHELIDOPTERA TENEBROSA, IN SURINAM
Swallow-winged Puffbird (Chelidoptera tenebrosa) Science Article 1 abstract Recently Skutch (Wilson Bull., 60, 1948:81-97) published an important article on the life history of certain puff-birds in which the Swallow-wing (Ckelidopteru tenebrosa, family Bucconidae) is mentioned briefly. As this is a common bird in Surinam, Dutch Guiana, the following supplementary notes may be of interest. F. […]
Relationship of Veniliornis Cassini Chocoensis and V. Cassini Caquetanus with V. Affinis
Red-stained Woodpecker (Veniliornis affinis) Science Article 1 abstract In reviewing species of the genus Veniliornis for a forthcoming book on the world’s woodpeckers I was able to reevaluate the status of Veniliornis chocoensis Todd (1919, Proc. Biol. Soc. Washington3 2: 116; chocoensis is treated universally as a race of V. cassini) and of V. cassinic […]
Nest-site selection and niche partitioning among the Great Spotted Woodpecker Dendrocopos major and Middle Spotted Woodpecker Dendrocopos medius in riverine forest of Central Europe
Middle Spotted Woodpecker (Dendrocopos medius) Science Article 2 abstract We studied nest-site selection of the Great- and Middle Spotted Woodpecker inhabiting the riverine forest remnants of Central Poland. In addition to nest tree characteristics and location in relation to edge proximity, a comparison between nesting and random sites within the woodpeckers’ territories allowed a study […]
Breeding performance of the middle spotted woodpecker Dendrocopos medius in relation to weather and territory quality
Middle Spotted Woodpecker (Dendrocopos medius) Science Article 5 abstract Reproductive success in birds is influenced by a variety of factors, many of which can be attributed to human activities such as land use or forest management. Others like weather or age of the birds are not under human control but are influential as well. From […]
Characteristics of trees preferred by foraging Middle Spotted Woodpecker Dendrocopos medius in northern Switzerland
Middle Spotted Woodpecker (Dendrocopos medius) Science Article 4 abstract The endangered Middle Spotted Woodpecker Dendrocopos medius is restricted to oak forests. We analysed this woodpecker’s foraging trees and behaviour in a coppice-with-standards wood in the Swiss lowlands. Oaks Quercus spp. were highly preferred and their diameter at breast height mainly ranged from 36-72 cm, corresponding […]