Survey methods for the purple martin in California

Author:

Airola Daniel1ORCID

Affiliation:

1. Conservation and Research Planning

Abstract

The purple martin (Progne subis) has declined substantially in numbers and geographic range since the 1980s. Surveys and monitoring are needed to better understand the status of the species, in order to set conservation priorities and direct actions. Purple martins in California often breed in habitats that differ from those in other areas of the species’ range. The species’ sparse distribution, colonial nature, and frequent use of inaccessible nests sites require specialized methodologies to determine suitable nesting habitat, occupancy, numbers, and reproductive success. I present a range of methods available to monitor nesting purple martins in the variety of nesting substrates in which they nest in California. These methods should improve efficiency and accuracy of surveys and provide comparable results that can be used to evaluate regional or statewide trends.

Publisher

California Fish and Wildlife Journal, California Department of Fish and Wildlife

Reference36 articles.

1. • Airola, D. A. 2009. Status of purple martin populations in northern California: results of a pilot study to develop and apply a survey methodology. U. S. Fish and Wildlife Service, Sacramento Field Office, CA, USA.

2. • Airola, D. A. 2020. Life Under the Fast Lane: Ecology and Conservation of the Bridge-Nesting Purple Martins in Urban Sacramento. Special Publication No. 1, Central Valley Bird Club, Sacramento, CA, USA.

3. • Airola, D. A., B. Cousens, and D. Kopp. 2014. Accelerating decline of the Sacramento purple martin breeding population in 2014: what are the possible causes? Central Valley Bird Club Bulletin 17:12–22.

4. • Airola, D. A., and J. Grantham. 2003. Purple martin population status, nesting habitat characteristics, and management in Sacramento. Western Birds 34:235–251.

5. • Airola, D. A., and D. Kopp. 2018. Another substantial decline in the Sacramento purple martin nesting population in 2018: the role of construction disturbance and future threats. Central Valley Bird Club Bulletin 21:75–88.

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