: They are cooperative breeders where older offspring often stay for up to five years to help their parents raise new chicks. 2. Identification & Physicality
: Their reasoning skills are comparable to a seven-year-old child . They can solve multi-step puzzles and understand basic physics.
: Crows can recognize individual human faces and remember them for years, often holding grudges against those they perceive as threats.
: One of the few species known to make and use tools ; they have been observed fashioning "knives" from stiff leaves or using sticks to retrieve food.