14 Prairie Chickens on lek in Hamden Slough NWR, corner of CR 13 and 106. Migration heating up: Western Meadowlarks and Sandhill cranes in area. Just a reminder, Detroit Lakes Festival of Birds is May 18 to May 21. This is the 20th Annual Festival. Keynote this year is David Sibley. For more information and to register go to www.visitdetroitlakes.com.