Dark Blue Jay or Woodhouse’s Scrub-Jay?

General appearance

Dark Blue Jays encompass deep blue to purplish-blue plumage with a strong black barring on their tail and wings. The throat, chin and upper breast showcases lighter blue shades with traces of grayish white. Their stout, robust build, black beak and feet, and an average length of 11-12 inches are conspicuous traits.

Male vs female

Sexual dimorphism isn't prominent in Dark Blue Jays, making it hard to distinguish between males and females. Both share identical color patterns and physical traits, females might be slightly smaller in size. Behavioral indications during breeding season might assist in discernment.

Juvenile

Juvenile Dark Blue Jays possess a duller coloration compared to adults until they complete their first molt. The immature birds have lighter blue to gray fluff with less distinct barring on tails and wings. The juvenile's eyes, initially a subtle blue-gray, brighten to a more pronounced white as they mature.

Primary habitat

The dark blue jay predominantly resides in temperate forests and woodlands in North America, specifically the Pacific Northwest region.

Additional range

Unexpectedly, this bird species effectively adapts to urban and suburban environments, provided there are sufficient trees for nesting and adequate food sources.

Natural diet

The dark blue jay primarily feeds on a variety of natural foods. It consumes insects, such as beetles and caterpillars, which provide necessary protein. Additionally, it eats fruits and berries from trees and shrubs, providing essential vitamins. Seeds and nuts are also part of its diet, offering vital energy and fats. Occasionally, the dark blue jay may eat small amphibians and eggs from other birds' nests when available. This diverse diet ensures a balanced intake of nutrients required for its survival in various environments.

Bird feeders

At bird feeders, the dark blue jay often consumes common offerings like sunflower seeds, peanuts, and corn. It may also partake in suet cakes, which provide high-energy content necessary for colder months. The bird shows a preference for larger seeds and nuts, cracking them open with its strong beak. Occasionally, the dark blue jay will sample other grains and seeds mixed into commercial bird feed blends, though it typically searches for its preferred high-nutrient options. Its versatile diet allows it to adapt to various feeder types, ensuring it's well-fed even in urban settings.