Journal
JOURNAL OF ORNITHOLOGY
Volume 150, Issue 3, Pages 529-535Publisher
SPRINGER HEIDELBERG
DOI: 10.1007/s10336-009-0372-8
Keywords
Andes; Behavior; Furnariidae; Life history evolution; Parental care
Categories
Funding
- Association of Field Ornithologists
- Population Biology Foundation
- Field Guides Inc.
- Maryland Ornithological Society
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The Spotted Barbtail (Premnoplex brunnescens) inhabits the understory of humid montane forests in Central and South America. Apart from basic information on eggs and nest form, little has been published on its breeding ecology. Using temperature sensors in nest cups, I have collected data on the diurnal patterns of egg-coverage from three nests in eastern Ecuador and reveal a remarkable incubation rhythm. After providing near-constant coverage during the morning, adults leave the eggs unattended for most of the afternoon, returning to the nest only in the late afternoon. The mean duration (+/- standard deviation) of this period of absence, across the entire incubation period at three nests, was 6.4 +/- A 1.9 h. These results are discussed in relation to their physiological and ecological significance.
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