Christmas Bird Counts for 2017 - 2018

a winter tradition

The Christmas Bird Count began in 1900 when Frank Chapman suggested that teams change their tradition of shooting birds as a Christmas sport to simply taking a census of them. In the ensuing years, the idea has grown and the CBC has become a winter tradition for many birders across the country with friendly competitions among states and even circles. As the first citizen science project, the CBC has captured enough data over the years that results are now used by various scientific organizations to document changes in bird populations. For more history and a neat video, check out the National Audubon's page on the CBC history. Don't forget to add your count information the the IOU calendar.

All CBC counts must be held during one calendar day during the period of 14 December to 5 January. These are the CBC dates for this season. Click the Select button to see the details.

The following documents may be downloaded and used for your count:

 CBC Species List  CBC Species Detail  CBC Report Form  CBC Documentation Form
View results from previous CBCs or check Iowa Bird Life for a summary of Iowa's season.   

Western Mercer Co. CBC12/14/2017
Mason City CBC12/16/2017
Lake Rathbun Christmas Count12/16/2017
Sioux City CBC12/16/2017
Bremer County CBC12/16/2017
Red Rock CBC12/16/2017
Cedar Rapids Count12/16/2017
Lamoni CBC12/16/2017
Dallas County CBC12/16/2017
Iowa City CBC12/17/2017
Saylorville Reservoir CBC12/17/2017
Cedar Falls-Waterloo CBC12/17/2017
Davenport CBC12/17/2017
Ida County CBC12/17/2017
Keokuk CBC12/18/2017
Clinton-Savannah CBC12/19/2017
Eldora-Union CBC12/19/2017
Yellow River Forest CBC12/20/2017
Princeton-Camanche CBC12/21/2017
NE Madison County CBC12/21/2017
Decorah CBC12/22/2017
Buchanan Co. CBC12/22/2017
Muscatine CBC12/23/2017
Des Moines CBC12/23/2017
North Linn Christmas Count12/27/2017
Sac County CBC 12/30/2017
Worth County CBC1/1/2018
Northwest Clayton Co. CBC1/3/2018
Union Slough NWR CBC1/4/2018
Southeast Clayton Co. CBC1/4/2018
Humboldt County CBC1/5/2018
Neal Smith NWR CBC1/5/2018