The state endangered trumpeter swan is found in marshes and swamps scattered throughout northern and southeastern Ohio.  The number of breeding pairs declined slightly from 2011 (a state record of 35) to 27 in 2012.  Production also declined from 132 fledging in 2011 to 39 in 2012.  The estimates of breeding pairs and production may be underestimated due to a dry summer which caused several pairs of swans to leave their usual brood rearing areas due to low water.  Thus, the birds could not be located during the aerial survey used to calculate production.  

Survey details and historical data can be found in the Wetland Species Overview section of the Wildlife Population Status and Hunting Forecast.

Population status of trumpeter swans throughout North America can be found at:
www.fws.gov/migratorybirds/reports/reports.html