Wild boar are primarily nocturnal animals irrespective of sex, age, or season, although they may be more diurnal in times of food shortage.
A loon is a large, heavy bird that weighs about 9 pounds (4 kilograms). Ducks range from 15 to 24 inches & are related to swans.
A scientist studies a species of duck. The males and females are about the same size. The females are brown, and the males are a bright mix of blue, white, and green.