About This Book
This bulletin reports a systematic study of the diets of several thrush species that breed or migrate through the United States, based on analysis of stomach contents. It summarizes proportions of animal versus vegetable matter, identifies insect groups, fruits, and other food items consumed, and traces seasonal and regional variation. Individual species accounts quantify prey types and percentages, note economically useful versus harmful items, and present tables of identified taxa and specimen counts to support recommendations about the birds' ecological roles.
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