The southern rut isn’t hard and fast as it is in the North. This leads to variations in peak conception dates, even in areas that are close to one another.

The southern rut isn’t hard and fast as it is in the North. This leads to variations in peak conception dates, even in areas that are close to one another.
Bergmann’s rule states that animal populations and species of larger size are found in colder environments, and the reverse is true in warmer regions.