Reproductive system of birds The gonads develop from two sources during embryonic development ... Milk provides young with continuous supply of food, while allowing female to forage at optimal times.

In mammals, male and female reproductive structures are found in separate individuals. If an egg is fertilised by a sperm in the oviduct then it divides a number of times then implants into the ...

Reproductive strategies of primate males and females differ because of fundamental sex differences in potential reproductive rates characteristic of all mammals (Trivers 1972, Clutton-Brock ...

have identified a neural circuit in the brain that governs sexual rejection in female mammals, providing key insights into the mechanisms shaping social and reproductive behaviors. The study ...

The Scientist spoke to hyena researcher Eve Davidian for a broad look at power relationships between male and female mammals ... females interact will determine how the reproductive interactions, the ...