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Winter distribution and oiling of common terns in Trinidad: A further look

Journal of Field Ornithology

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Abstract

Common Terns were studied during January and March 1985 in Trinidad as part of wintering terns in Latin America. Eighty-nine birds were captured, 33 in January, 56 in March. Terns averaged 102 .+-. 0.9 g, with March birds weighing more than those caught in January. This weight is similar to that reported earlier by Blokpoel et al. (1982, 1984) and is considerably less than weights of either premigratory immature or adult Common Terns. Terns in Trinidad appear to be opportunistic, using human fishing for their food source and roosting on boats, oil platforms and other man-made structures. One-half of the captured sample of birds had at least detectable amounts of oil on the plumage. This represents the highest frequency of oiling reported yet for any seabird living under 'baseline' (non-spill) conditions in North or Central America. Oiling had no apparent major effect on the condition of birds since oiled birds had similar weights and blood parameters when compared to unoiled birds.

Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
Winter distribution and oiling of common terns in Trinidad: A further look
Series title:
Journal of Field Ornithology
Volume
57
Issue:
4
Year Published:
1986
Language:
English
Contributing office(s):
Patuxent Wildlife Research Center
Description:
300-308
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
First page:
300
Last page:
308
Number of Pages:
9