Endangered Species
Midwest Region

 

 

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The Midwest Region includes Illinois, Indiana, Iowa, Michigan, Minnesota, Missouri, Ohio and Wisconsin. Find a location near you

 


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Kirtland's Warbler

Census Results: 1951, 1961, 1971 thru 2015

 

The first census took place in 1951, the second in 1961. Counts have been conducted annually from 1971 to 2015 (except for 2014). Census areas include Michigan, Wisconsin and Ontario, Canada.

 

Due in part to the increase in population numbers and distribution, and significant effort and cost associated with monitoring for the Kirtland’s warbler, the census in Michigan’s northern Lower Peninsula has shifted to a less intensive survey protocol.  Starting in 2017, surveys for Kirtland’s warblers in northern lower Michigan will occur every other year in a portion of the known occupied habitat.  This less intensive survey is designed to detect population trends.

 

Bar chart showing the results of Kirtland's warbler censuses since 1951.

 

 


 

Table 1. Results of the Kirtland's Warbler Singing Male Census from 1952, 1962, and 1971 thru 2015

 

Year Singing Males

2015

2,365

2014

Complete census not conducted

2013

2,020

2012

2,090

2011

1,828

2010

1,773

2009

1,826

2008

1,803

2007

1707

2006

1485

2005

1420

2004

1341

2003

1202

2002

1050

2001

1085

2000

891

1999

904

1998

804

1997

728

1996

692

1995

765

1994

633

1993

485

1992

397

1991

347

1990

265

1989

212

1988

207

1987

167

1986

210

1985

216

1984

215

1983

215

1982

207

1981

232

1980

243

1979

211

1978

200

1977

219

1976

200

1975

179

1974

167

1973

216

1972

200

1971

201

1961

502

1951

432

 

 

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Last updated: October 10, 2018