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How many kilojoules does a Black-billed Magpie nest cost?

Journal of Field Ornithology

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Abstract

1. Progress is reported toward development of a method of bird-population study based on mist-netting and banding. A definite pattern of arrangement and schedule of operation are presented. 2. Nets were operated for a total of 4200 net-hours during which 966 captures were made (23.0 birds per 100 net-hours). A total of 431 adult breeding birds were banded and 38 per cent of them were recaptured. 3. A breeding bird census was made simultaneously in the same area by the Williams spot-mapping technique. 4. Estimates of population by recapture agreed closely with the spot-mappmg census. 5. Some birds are demonstrated to have overlapping home-ranges much larger than their singing territories. 6. Recruitment and net-shyness distort recapture estimates of population .but the method allows detection and assessment of their influence in the population dealt with here. 7. The method produced integrated information on population density and dynamics, movement and behavior. 8. The procedure is especially well adapted to studies of disease agents in bird populations. 9. A simple scheme for description of the habitat in terms of relative abundance and frequency of occurrence of tree species was used.

Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
How many kilojoules does a Black-billed Magpie nest cost?
Series title:
Journal of Field Ornithology
Volume
73
Issue:
3
Year Published:
2002
Language:
English
Contributing office(s):
Fort Collins Science Center
Description:
p. 292-297
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
First page:
292
Last page:
297
Number of Pages:
6