Hyacinth Macaw

The Hyacinth Macaw is the largest of all parrots by length, a striking all-blue macaw found in central South America. Its enormous size and uniform deep-blue plumage set it apart from every other macaw species.

The entire body is a rich cobalt to hyacinth blue, with slightly darker flight feathers and a long, graduated tail. The bare skin around the eye and at the base of the massive black bill is bright yellow, providing the only strong color contrast on an otherwise monochromatic bird. The bill is exceptionally large and powerful relative to body size.

Key field marks

• Entirely deep blue plumage, larger than any other macaw
• Bright yellow bare skin around the eye and at the base of the lower mandible
• Massive black, deeply hooked bill
• Long, heavy blue tail

Similar species

The much smaller and rarer Lear's Macaw and Glaucous Macaw (the latter possibly extinct) are the only other all-blue macaws, both notably smaller-bodied with less extensive yellow facial skin and far more restricted or reduced ranges. Size alone usually separates the Hyacinth Macaw from any other parrot in its range.

Range

The Hyacinth Macaw is found in three main disjunct populations in central South America: the Pantanal region spanning Brazil, Bolivia, and Paraguay; the Cerrado of east-central Brazil; and the eastern Amazon Basin.

Habitat

It inhabits palm savanna, gallery forest along watercourses, and seasonally flooded woodland, closely tied to the availability of specific palm species whose nuts form its primary diet.

Movements

Generally sedentary within a home range, though birds may travel considerable distances daily between roosting and key feeding palms.

Social behavior

Hyacinth Macaws are usually seen in pairs or small family groups, occasionally gathering in loose flocks at abundant food sources or communal roost trees.

Voice

Calls include loud, deep, guttural screeches and growls, lower-pitched than those of most other macaws, audible over long distances.

Feeding

Their diet is highly specialized around palm nuts, especially those of acuri and bocaiuva palms, which they crack using immense bite force from their oversized bill; they also take other seeds and fruit and sometimes feed on nuts already processed by cattle.

Nesting and breeding

Pairs nest primarily in large tree cavities, especially in manduvi trees in the Pantanal, laying 1-2 eggs, though typically only one chick survives to fledging. Nest cavities suitable for this large bird are limited, making nest-site availability a key conservation factor.