Hawaiian Crow

Corvus hawaiiensis

Order

PASSERIFORMES

Family

Crows and Jays (Corvidae)

Code 4

HCRO

Code 6

CORHAW

ITIS

Egg Color:

Blue gray with black and brown spots.



Number of Eggs:

1 - 5



Incubation Days:

18



Egg Incubator:

Both sexes



Nest Location:

On tree branch.



Nest Material:

Made with sticks and lined with twigs or leaves.



Migration:

Nonmigratory



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General

Hawaiian Crow: Medium-sized crow with dull, brown-black body and brown-tinged wings; fine bristle-like throat feathers. Tail is stout and squarish. Eyes are brown and moderately arched bill is glossy black, large and stout; conspicuous nasal tuft covers base of culmen. Legs and feet are a glossy gray-black with large scales along the front and smooth across the back. Sexes are similar. Male is larger than female. Juvenile has blue eyes and rather fluffy dull, dark blue-gray plumage; iris is blue.

Range and Habitat

Hawaiian Crow: Endemic to Hawaii, and is currently found on the island of Hawaii in a small area of central Kona on the west slope of Mauna Loa Volcano. Formerly common and bred throughout the slopes of the volcanoes of Hualalai and Mauna Loa. By 1987, just ten wild individuals remained. Inhabits native Hawaiian Ohia forests or Ohia and Koa mixed forest. Prefers open forests.

Breeding and Nesting

Hawaiian Crow: The breeding season ranges from March to July. One to five blue gray eggs spotted with black and brown are laid in a nest made of twigs and sticks built on a branch of an ohia tree. Eggs are incubated for 18 days by both parents. The young birds remain with the parents until they are old enough to feed themselves.

Foraging and Feeding

Hawaiian Crow: These crows are omnivorous, taking the fruits of many species of trees and shrubs, invertebrates, and small bird eggs and nestlings. They forage in trees, foliage, shrubs and thick vines. Occasionally they feed on the ground. They secure and carry food items with their bill. They obtain water primarily from fruit, but dew and rain drops are also taken from leaves.

Vocalization

Hawaiian Crow: Call is a crow-like "cawk" or "ca-wack." Other vocalizations include raucous growls.

Similar Species

Hawaiian Crow: Not likely to be confused with any other species.

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CulmenX
The uppermost central ridge of the upper mandible.
Parts of a Standing bird X
Head Feathers and Markings X
Parts of a Flying bird X