The male and female usually pair for life. Both females and males look the same. Normally it isn't possible to tell the female from the male Blue Jay just by the looks of it. The untidy nest of twigs is built by both birds in a tree or shrub. Since 2010, Batema has been an active writer in the fields of education, parenting, science and health. The crest is fully upright when the blue jay is excited or in an aggressive state. A female blue jay is sometimes actually smaller. Other than that, sometimes, the marking pattern of black on a blue jay might differ out its gender. Males and females behave differently during the nest-building period, which takes about a week. They also eat insects, seeds and grains. The newly-hatched young are fed by both adults. She can be seen walking about, choosing her mate from a group of males rustling their feathers and bobbing their heads. Once the female lays the egg, she incubates them while the male hunts for food to bring his mate. However, a male can be distinguished from a female when closely observed during their courting and mating rituals. While male and female blue jays are almost identical, one can tell them apart by observing them in their habitat. However, subtle differences can be observed during their courtship and mating ritual. For example, if a female begins to fly, the males follow; when the female lands, the group of males also land. Blue jays live at the edges of forests, as well as in parks and yards, especially those with oak trees that provide their favorite food, acorns. The male’s behavior is dictated by the female. Otherwise male and female Blue Jays appear almost identical in appearance to the casual human glance. Male blue jays tend to be larger in size than females, but since males and females share the same plumage, it is difficult to tell them apart by size alone. Copyright 2020 Leaf Group Ltd. / Leaf Group Media, All Rights Reserved. The duties of incubating the eggs are performed by the female. The female also does most of the incubating of the pairs eggs while the male blue jay will bring food to the female. The eggs of the Jay are about 32 mm by 23 mm in size, and are smooth, glossy, and pale blue-green or olive with buff-coloured speckles. While a male is usually bigger than a female blue jay, both are identical when it comes to other physical attributes. The female also does most of the incubating of the pair’s eggs while the male blue jay will bring food to the female. Careful observation of behavior is the only way to positively identify male from female blue jays. Blue jays are large songbirds often identified by their blue bodies and head crests, or sometimes by their noisy calls. The female leads the group, and if she flys somewhere, the male birds follow her. Unlike some other birds, male and female blue jays usually form mating pairs that bond for life. She will incubate their eggs and wait for her mate to bring food. However, a male can be distinguished from a female when closely observed during their courting and mating rituals. In these groups, a single female blue jay determines the behavior of the surrounding males. When patrolling the woods, Steller’s Jays stick to the high canopy, but you’ll hear their harsh, scolding calls if they’re nearby. A male blue jay usually measures 30 centimeters (11.8 inches) long and is often larger than a female blue jay, but other than that, they are similar in physical appearance. However, the female does most of the work of work in building the actual breeding nest. The female can be seen “leading” a group of male blue jays during courtship. When it is feeding with other blue jays, or resting, the crest lies flat on its head. Sign up for our newsletter to get comparisons delivered to your inbox. Difference between Male and Female Blue Crabs, Difference between a Male and a Female Bearded Dragon, Difference between Male and Female Turtles, Difference between Seltzer, Club Soda, and Tonic Water, Difference between a Broiler, Fryer and Roaster Chicken, Follows the female blue jay during courtship, Difference between Male and Female Blue Jays. Both the male and female blue jay will share responsibility at first while building practice nests. After the female lands, she will simply observe the others, while the male of the birds will notably bob their heads up and down to try an… As part of their courting ritual, a group of male blue jays follow a female blue jay. Female blue jays are usually smaller than male blue jays, but is physically similar. However, the female does most of the work of work in building the actual breeding nest. One of the primary ways of identifying a female blue jay from a male blue jay is watching how the bird behaves during courtship. Other than that, sometimes, the marking pattern of black on a blue jay might differ out its gender. Both the male and female blue jay will share responsibility at first while building practice nests. Their unmistakable plumage includes various shades of bright blue on their wings and tails, white or grey underparts, white patches on the wings and tail and a dark band around the neck, known as a necklace. Blue jays have a peculiar habit when they molt, or lose their feathers, called "anting."