Blue Jay - The Blue Jay measures 22–30 cm from bill to tail and weighs 70–100 grams , with a wingspan of 34–43 cm .
Steller's Jay - The Steller's Jay shows a great deal of regional variation throughout its range. Blackish-brown-headed birds from the north gradually become bluer-headed farther south. The Steller's Jay has a more slender bill and longer legs than the Blue Jay and has a much more pronounced crest. The head is blackish-brown with light blue streaks on the forehead. This dark colouring gives way from the shoulders and lower breast to silvery blue. The primaries and tail are a rich blue with darker barring.