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Electromyographic studies of the syrinx in parrots (Aves, Psittacidae)
Zoomorphology, 1985The vocal organ (syrinx) of a bird may contain either extrinsic muscles alone or both extrinsic and intrinsic muscles. The former arise and insert on the trachea and affect the syrinx only indirectly; the latter also arise on the trachea but insert directly on syringeal elements.
A. S. Gaunt, S. L. L. Gaunt
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HYACINTH MACAWS (ANODORHYNCHUS HYACINTHINUS, PSITTACIDAE) FEEDING ON TERMITES
Ornitología Neotropical, 2017Abstract ∙ Hyacinth Macaws (Anodorhynchus hyacinthinus) feed largely on palm seeds and fruits. Here, we report a pair of Hyacinth Macaws feeding on termites. We visited the nesting tree of a pair of Hyacinth Macaws at the southern border of the Brazilian Pantanal on a monthly basis during one year.
Gabriel Arvelino De Paula +2 more
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The Historic and Prehistoric Distribution of Parrots (Psittacidae) in the West Indies
2001— If not for human impact, three genera of psittacids (Ara, Aratinga, and Amazona) would be represented today throughout the Greater and Lesser Antilles. The Cayman Islands and Bahamas are the only regions lacking evidence of Ara and Aratinga. Guadeloupe is the only island with possible evidence for the occurrence of a fourth genus, Anodorhynchus.
Matthew I. Williams, David W. Steadman
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