Steller's jays can imitate the vocalizations of many species of birds, other animals, and even sounds of non-animal origin. North America's largest Jay, the Steller's Jay is also known as the loudest of its kind. Found high on the mountain slopes of the west, this bird lives its life much like its eastern relative, the Blue Jay. The Steller's Jay squatts as close to the ground as it can and screams. From a distance, the Steller’s, which is related to the blue jay , may look like just a dark crested bird. Steller's Jay Habits. These stylish "eyebrows" are one way to tell an Alaska Steller's jay from those of the western interior states where the markings are white. The Steller's jay has a dark crest on its head that it can puff up or fold back, and just above the eyes are streaks of blue in the surrounding black feathers. Behavior and Ecology of Steller's Jay . Steller's jays are usually loud both day and night, however, during the nesting period they are quiet in order to not attract attention. Together they construct the nest from stems, grass and moss. They tend to gang up on the local hawk to chase the hawk out of the property. To better understand the factors that influence mobbing behavior in wild Steller’s jays (Cyanocitta stelleri), I induced mobbing behavior using 3 predator Feeds on pine seeds, acorns, fruit, frogs, snakes, carrion, insects and eggs and young of other birds. When patrolling the woods, Steller’s Jays stick to the high canopy, but you’ll hear their harsh, scolding calls if they’re nearby. Steller's Jay: Large crested jay with a black head and crest and a blue body. Unlike other jays, they may also use mud. Steller's Jay & Hawk Behavior. The Steller’s Jay is a feeder visitor many backyard birders enjoy seeing. Mobbing is a widespread anti-predator behavior with multifaceted functions. 2016). He first classified them on an expedition to an Alaskan island in 1741. A series of students and I will investigate mechanisms behind the complex social system and ecological relationships that drive the distribution and dynamics of the local jay population. Social behavior of Steller’s jays. Description Of Bird. A large, dark jay of evergreen forests in the mountainous West. We've often seen a hawk with it's talons on the back of a Steller's Jay. Head has slight white eyebrow, forehead, and chin spots. The Steller's jay is sometimes colloquially called a "blue jay" in the Pacific Northwest. Smart, gregarious and handsome, the black and blue Steller’s jay is named after German naturalist Georg Steller. The same subspecies of Steller’s jay, Cyanocitta stelleri annectens, occurs at both of these sites (Walker et al. Measuring 12 to 13 1/2 inches in length. Steller’s Jays are common in forest wildernesses but are also fixtures of campgrounds, parklands, and backyards, where they are quick to spy bird feeders as well as unattended picnic items. The Steller’s jay is a bold and aggressive species frequently found scavenging in campgrounds, picnic areas, and feeding stations in the West. When nesting, the site is chosen by both the male and female. Both have a crest. Noisy and bold, a Steller’s Jay will be among the first go on the defensive to mob a predator. Blue jay uses devious trick to hog food. The experiments were performed between 8:00 AM and 3:00 PM in the winter months (November to March) when Steller’s jays form flocks and regularly visit feeders. Wings and tail are blue with black bars. Mobbing behavior has been found to differ with respect to many individual, group, and encounter level factors. Found to differ with respect to many individual, group, and sounds. 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