[5] Being of the family Psittacidae, the sisserou has zygodactyl feet and a thick, hooked bill with a muscular tongue.

[5] Juvenile appearance does not differ much, with a higher occurrence of green plumage and strictly brown eyes.

[5] The call of the sisserou resides in the higher frequencies, a loud and even "squeaky" mix between shriek, squawk, and trill.

[5] During fledging, which occurs between June and early September, both parents will take care of and feed the chicks until they are fully feathered and ready to leave the nest.

[8] The sisserou's diet consists of fruits, seeds, nuts, berries, blossoms and palm shoots.

[3] Their favorite foods include the fruits of Dacryodes species, Licania ternatensis, Richeria grandis, Amanoa carboea, Simarouba amara, Symphonia globulifera, Pouteria pollida, Tapuru atillan, the flowers and seeds of Chimarcis cymosa, and the nuts and young shoots of Euterpe palms.

[10] The imperial amazon is endemic to the Caribbean island nation of Dominica in the Lesser Antilles where it inhabits mountain forest areas above 2,100 ft (625 m).

[12] The species frequently occurs in the Morne Diablotins in northern Dominica, especially the upper Picard River Valley on the northwest side of the mountain.

Many of the organizations have helped create groups of people to raise awareness, provide education, and conduct research.

Another hit was by Hurricane Maria in September 2017, which caused extensive damage on the island, affecting habitat.

Trapping for food and trade is still a threat, even though education programmes have reduced the local market greatly.

A bone found on Marie-Galante (between Dominica and Guadeloupe) has been assigned to A. violacea and suggests that A. imperialis either inhabited, or was traded between, all three islands in prehistoric times.