Microclimate of ground nests: the relative importance of radiative cover and wind breaks for three grassland species
Article Abstract:
A study was conducted on the effects of microclimactic factors on ground nests and the importance of radiative cover at nest sites for the McCown's Longspur, Horned Lark and Lark Bunting. These ground-nesting birds exhibited differing nest placement strategies and an examination of relative wind velocities at nests revealed that Longspur and Horned Lark nests were better sheltered from the wind than that of Lark Buntings. Examination of the relation between bunting nests and overhanging vegetation showed that it could be a method for obtaining radiative cover.
Publication Name: The Condor
Subject: Biological sciences
ISSN: 0010-5422
Year: 1993
User Contributions:
Comment about this article or add new information about this topic:
Artificial snags as nesting sites for chickadees
Article Abstract:
Chickadees take snags as nesting sites and Carolina chickadees lack preference between filled and empty cavities for nesting. Black-capped chickadees seem to resemble the closely-related willow tit in showing a preference for excavating a nest site. Carolina chickadees indulge in roosting and nesting without bothering about shrub cover near the snag. Chickadees in a hybrid zone show preference for nesting within the taller of the two cavities.
Publication Name: The Condor
Subject: Biological sciences
ISSN: 0010-5422
Year: 1995
User Contributions:
Comment about this article or add new information about this topic:
The effect of thermal microclimate on foraging site selection by wintering mountain chickadees
Article Abstract:
The relationship between thermal microclimate and foraging site selection for Mountain Chickadees was evaluated in Feb. and Mar. 1992. Dataloggers and mounted sensors were used to measure air temperature, wind speed and solar radiation at 465 foraging sites and 525 available sites. Sites with higher air temperatures and lower wind speed were favored by the birds over available foraging sites.
Publication Name: The Condor
Subject: Biological sciences
ISSN: 0010-5422
Year: 1996
User Contributions:
Comment about this article or add new information about this topic:
- Abstracts: The role of floor plate contact in the elaboration of contralateral commissural projections within the embryonic mouse spinal cord
- Abstracts: Starvation stress modulates the expression of the Aspergillus nidulans brlA regulatory gene. The TBP gene from Aspergillus nidulans - structure and expression in Saccharomyces cerevisiae
- Abstracts: Interactions of saprophytic yeasts with a nor mutant of Aspergillus flavus. Efficacy of the Ryu nonstaining KOH technique for rapidly determining Gram reactions of food-borne and waterborne bacteria and yeasts
- Abstracts: Endogenous basic fibroblast growth factor is implicated in the vascularization of the chick embryo chorioallantoic membrane
- Abstracts: Insecticidal activity of Bacillus latesporus. Distribution and characterization of mosquitocidal toxin genes in some strains of Bacillus sphaericus