Common Raven (Corvus corax)
Demonstrative Call: The familiar croak of the raven. Deep and harsh, and usually given in a repeated series.
Common Raven demonstrative call, June 7, 2012. Douglas County, Wisconsin.
Popping Call: Ravens make a variety of hollow popping or hooting type sounds.
Common Raven popping call, June 7, 2012. Douglas County, Wisconsin.