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Predators as prey at a Golden Eagle Aquila chrysaetos eyrie in Mongolia

Ibis

DOI: 10.1111/j.1474-919X.2000.tb07694.x
By:
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Abstract

Although golden eagles (Aquila chrysaetos) have for decades been known to occasionally take large or dangerous quarry, the capturing of such was generally believed to be rare and/or the act of starved birds. This report provides details of an exceptional diet at a golden eagle eyrie in eastern Mongolia with unquantified notes on the occurrence of foxes at other eyries in Mongolia. Most of the prey we recorded were unusual, including 1 raven (Corvus corax), 3 demoiselle cranes (Anthropoides virgo), 1 upland buzzard (Buteo hemilasius), 3 owls, 27 foxes, and 11 Mongolian gazelles. Some numerical comparisons are of interest. Our value for gazelle calves (10 minimum count, 1997) represents 13% of 78 prey items and at least one adult was also present. Our total of only 15 hares (Lepus tolai) and 4 marmots (Marmota sibirica) compared to 27 foxes suggests not so much a preference for foxes, but rather that populations of more normal prey were probably depressed at this site. Unusual prey represented 65% of the diet at this eyrie.

Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
Predators as prey at a Golden Eagle Aquila chrysaetos eyrie in Mongolia
Series title:
Ibis
Volume
142
Issue:
1
Year Published:
2000
Language:
English
Contributing office(s):
Patuxent Wildlife Research Center
Description:
139-141
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
First page:
139
Last page:
141
Number of Pages:
3