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Food of nestling green-backed herons in West Central Mississippi

Colonial Waterbird Society Newsletter

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Abstract

Food habits of the green-backed heron have received much attention recently, though little data exists in the literature on food items fed to nestlings. Analysis of 74 nestling boluses collected between 5 May and 10 July 1985 included four categories: a) number of prey items, b) % of total individuals by number, c) % frequency of herons with that particular prey item, d) % of total diet by weight. By class, fish dominated the diet, followed by insects, amphibians, crustaceans, and arachnids in descending order. Amphibians, however, had a higher % of total diet by weight than insects. The mosquitofish (Gambusia affinis) made up the largest part of the diet by # of prey items and % of total individuals by #. Bowfin (Amia calva) was the major prey item by weight. Back-swimmers (F. Notonectidae) occurred in more boluses than any other prey item. Lengths of prey items by class will also be discussed.

Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
Food of nestling green-backed herons in West Central Mississippi
Series title:
Colonial Waterbird Society Newsletter
Volume
10
Issue:
3
Year Published:
1986
Language:
English
Contributing office(s):
Patuxent Wildlife Research Center
Description:
28 (abstract)
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
Larger Work Title:
Colonial Waterbird Society Newsletter
First page:
28(abs)