LANSING, MI - The population of the Kirtland’s warbler – a bird that breeds in northern Michigan – continues to bounce back.
The Michigan Department of Natural Resources said last week a recently released annual survey shows the bird’s population is at a record high.
Researchers and volunteers in Michigan counted 2,063 singing males during the official 2012 survey period – up from 1,805 males a year ago. That’s the largest single-year increase since 2007.
The lowest numbers were documented in both 1974 and 1987, when 167 singing males were found.
Only males sing. The DNR figures that each male has a mate with him, so the breeding population is generally considered to be twice the count of the singing males.
Michigan has made special preservation efforts to help the warbler, which is considered endangered.