Northern Mockingbird

This bird is a master mimic, capable of imitating not only the calls of other birds but also dog barks and car alarms. 

Northern Mockingbird

Researchers found that mockingbirds were able to recall an individual human who had approached and threatened the mockingbirds' nest.

Researchers had one participant stand near a mockingbird nest and touch it, while others avoided the nest. Later, the mockingbirds recognized the intruder and exhibited defensive behavior, while ignoring the other individuals.　(From Wikipedia)