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Hourly laying patterns of the Pearly-eyed Thrasher (Margarops fuscatus) in Puerto Rico

Author(s):

Year:

2011

Publication type:

Scientific Journal (JRNL)

Primary Station(s):

International Institute of Tropical Forestry

Source:

Wilson Journal of Ornithology. 123(3):624–628.

Description

Temporal aspects of egg deposition are important factors governing avian reproductive success. I report hourly egg-laying patterns of the Pearly-eyed Thrasher (Margarops fuscatus) in the Luquillo Experimental Forest in northeastern Puerto Rico during 1979–2000. Initiatory eggs were laid by early morning (median 5 0642 hrs, AST) and almost half of the eggs were laid by 0723 hrs. Many penultimate and eggs completing a clutch, however, were laid later in the morning and some not until mid afternoon (1429 hrs), thus extending egg deposition to 8 hrs. Delayed laying of the last eggs in a clutch may be an adaptive strategy triggering brood reduction to ensure survival of older and more robust siblings during periods of physiological stress and food shortages.

Citation

Arendt, W.J. 2011. Hourly laying patterns of the Pearly-eyed Thrasher (Margarops fuscatus) in Puerto Rico. Wilson Journal of Ornithology. 123(3):624–628.

Publication Notes

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https://www.fs.usda.gov/treesearch/pubs/39006