A good question...the tropics should be a land of plenty, right? It comes down to raising a family. Although food's available all year round down south, there are so many birds competing for it that the youngsters would never survive. Birds come northward to be able to spread out and find a territory big enough to support a nest of hungry chicks.
A good question...the tropics should be a land of plenty, right? It comes down to raising a family. Although food's available all year round down south, there are so many birds competing for it that the youngsters would never survive. Birds come northward to be able to spread out and find a territory big enough to support a nest of hungry chicks.