Allowable take of a population of red-winged blackbirds in the northern Great Plains

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Abstract

Red-winged blackbirds (Agelaius phoeniceus) are protected under the Migratory Bird Treaty Act (MBTA), which has provisions against take. Blackbirds may be taken legally without a Federal permit, however, under an existing Depredation Order (50 CFR 21.43), which allows for take of blackbirds that are in the process of doing, or about to do, agricultural damage. Modeling the effect of take on blackbird population allows us to balance the conservation protections of the MBTA with the protection of agricultural interests. A quantitative framework based on harvest theory, demography, and population status has been used to assess the allowable take of a number of species of birds under the MBTA. In this chapter, we calculate allowable levels of take for two populations of red-winged blackbirds in the northern Great Plains from estimates of intrinsic growth rate and population size.

Additional publication details

Publication type Book chapter
Publication Subtype Book Chapter
Title Allowable take of a population of red-winged blackbirds in the northern Great Plains
ISBN 9781498799614
Year Published 2017
Language English
Publisher CRC Press
Publisher location Boca Raton, FL
Contributing office(s) Patuxent Wildlife Research Center
Description 16 p.
Larger Work Type Book
Larger Work Subtype Monograph
Larger Work Title Ecology and management of blackbirds (Icteridae) in North America
First page 191
Last page 206