4. Mallard quacks and rab-rabs.
2. Birds and Their Sounds
Birds without a song just call
From page 12 in the book.
Mallard quacks and rab-rabs. Mallard ducks occur nearly everywhere in North America. Find them on a pond in a suburban park and listen to the variety of sounds they make. Can you confirm that only females QUACK? Do only males rab? Try to follow an individual female and determine when or if or how she quacks, and under what circumstances. Or follow an individual male, listening for his rab notes.