That’s because spring is when most birds turn to family obligations—they mate, build nests, lay eggs and raise young. Why do birds sing so much during this time, though? Why Do Birds Sing? Singing is ...

A male and female cardinal in Michigan represent birds who chose a shorter life filled with offspring to maximize their evolutionary impact. Birds worldwide make strategic decisions about how they ...

Additionally, same-sex and multi-sex mating systems have been documented in birds, meaning that relying just on data representing a male-female binary excludes a broader spectrum of reproductive ...