Original comic by anonymous artist on 4Chan

Sounds From

Sparrow call / Sparrow sound / Animal sounds sparrow 
https://www.youtube.com/watch?v=qIuUBnJJwCM

Northern Cardinal Calling - 4 different calls 
https://www.youtube.com/watch?v=3dLaeG6WCj0

Crow - Ricky says "Caw" 
https://www.youtube.com/watch?v=Rbzgu_qaxPM