Costs and benefits of nest reuse versus excavation in cavity-nesting birds
نویسندگان
چکیده
1) Department of Biology, University of Saskatchewan, 112 Science Place, Saskatoon Saskatchewan, S7N 5E2, Canada (e-mail: [email protected]) 2) Hastings Reservation and Museum of Vertebrate Zoology, University of California Berkeley, 38601 E. Carmel Valley Rd., Carmel Valley, California, 93924, USA 3) Department of Forest Sciences, University of British Columbia, 2424 Main Mall, Vancouver, B.C., V6T 1Z4, Canada
منابع مشابه
Variation in the Costs, Benefits, and Frequency of Nest Reuse by Barn Swallows (hirundo Rustica)
ABSTP•CT.--The frequency of nest reuse and the costs and benefits of this behavior were investigated in a population of Barn Swallows (Hirundo rustica) at Delta Marsh, Manitoba, during 1984-1986. Slightly less than half the clutches were laid in old nests, and this proportion did not change seasonally except in one late year when old nests were preferred by late-nesting pairs. The delay between...
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Barrow’s Goldeneye (Bucephala islandica) and Bufflehead (B. albeola) are cavity-nesting waterfowl that have received considerable attention in studies using nest boxes, but little is known about their nesting ecology in natural cavities. We found larger clutch size, lower nesting success, and different major predators for Barrow’s Goldeneyes nesting in boxes versus those nesting in natural cavi...
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