Female cardinal call / song / sounds
Bird Songs Bible' Tweets, The Old-Fashioned Way : NPR
What wild bird sounds like it is saying 'purty, purty, purty'? - Quora
Northern Cardinal Calls & Songs: Recognizing the Beautiful Sounds of Cardinals – Nature Blog Network
A Rare Bird Indeed: A Cardinal That's Half Male, Half Female - The New York Times
Northern Cardinal Song
Northern Cardinal Songs and Calls - Larkwire
Northern Cardinal Call - 5 different Calls
Bird Sounds and Calls of the Northern Cardinal