The differences between male and female blue jays are that males generally gather nest materials and food, while the females do most of the building of the nests and incubate the eggs. The differences between male and female blue jays can be determined by observing their mating and nesting habits. The size of males and females is similar, and they share similar feather colorings.
Blue jays are intelligent birds and maintain advanced social systems. They mate for life and form family bonds. They are recognized by their bright blue color and loud, distinctive call. They live in many different types of forests, but they tend to prefer areas with many oak trees. They eat nuts, seeds and some grains. They are also suspected to eat the eggs and nestlings of other bird species.
Blue jays communicate vocally and with body language, and it seems that they have distinctive calls for various types of communication and messages. They appear to warn one another of approaching predators and can become aggressive if they feel threatened.
Blue jay habitats are most commonly found in southern Canada and the eastern and central regions of the United States, including Texas and Florida. Blue jays from northern areas and younger birds are likely to migrate a few hundred miles to the south in the winter, but many blue jays live in the same area all year long.