Intelligence
In a paper published in 2009, researchers found that mockingbirds were able to recall an individual human who, earlier in the study, 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.
Read more about this topic: Northern Mockingbird
Famous quotes containing the word intelligence:
“It’s easy to forget what intelligence consists of: luck and speculation. Here and there a windfall, here and there a scoop.”
—John le Carré (b. 1931)
“I happen to feel that the degree of a person’s intelligence is directly reflected by the number of conflicting attitudes she can bring to bear on the same topic.”
—Lisa Alther (b. 1944)
“Give me a sentence which no intelligence can understand. There must be a kind of life and palpitation to it, and under its words a kind of blood must circulate forever.”
—Henry David Thoreau (1817–1862)