Final answer:
The crow is the donor of the attacking behavior when it attacks a red-tailed hawk, which is an altruistic behavior to protect its young or community.
Step-by-step explanation:
When a crow attacks a red-tailed hawk flying nearby, the crow is the donor of the attacking behavior. This behavior may be an example of an altruistic behavior, where the crow is trying to protect its own young or the community by diverting a potential predator away from them.
Similar behaviors can be observed in other bird species where a parent may create a distraction, like pretending to have a broken wing, to steer predators away from their fledglings. The crow is willing to decrease its own fitness for the benefit of its offspring or community.