Problem:
Blue jays seem better than robins at recognizing individuals. In one study, blue jays raised by robins (a method known as cross-fostering, blue jay eggs are placed in robin nests) could distinguish strange from familar robins better than the robins could.
Required:
Question 1: What mechanism for the evolution of altruism, if any, is likely to operate in blue jays?
Question 2: State two conditions that are required for the mechanism that you propose. Pick one of those conditions and briefly describe how you could determine whether or not it occurs in blue jays.
Please Explain don't just write the answer.