ML249252161

Alter und Geschlecht

adultes Männchen - 1

Beobachtungsdetails

Within the Paradise Park/Lyon Arboretum forest exists a geographically sedentary population of Maluku Island hybrid cockatoos (Cacatua moluccensis x Cacatua alba). There had been two pure-species salmon-crested cockatoos which are documented in this 2004 observation. One of these individuals had a USDA split-ring quarantine station (HNL) leg band (right leg). These two birds were determined to be males - by behavior and being paired with individuals they copulated with on other observation days (video available). These two pure Salmon-crested cockatoo individuals do not exist any longer rumored due to lethal population management actions, dropping the total population to approximately 8 birds. The majority if not all, remaining large cockatoos in this forest are hybrid progeny of the aforementioned species (including these two birds) over a 50 and continuing year presence there. A key diagnostic feature of Salmon-crested cockatoos is their crest. both adult genders and immature birds have deeply saturated color (not pastel or incomplete) for the full length of the inner crest feathers and the crest is sickle shaped and lays tightly along the curvature of the head when closed. When extended it maintains the sickle shape, continuing to curve backward and appears stiff. This is in contrast to a close relative, Cacatua alba, which has a longer and fan-shaped crest that expands, is not very curved and does not conform tightly to the curvature of the head when closed. Most importantly it is pure white-colored. Hybrids of these two species, and offspring of hybrids show characteristics of both species in their crests...all having some salmon pink- usually incomplete and pastel colored and the crest morphology is highly variable, being of intermediate morphology between both species. in 2020 possibly all birds except one are C. moluccensis x C. alba hybrids, the one being a pure c. moluccensis, though it is likely it is a pure species x hybrid offspring that looks mostly like a c. moluccensis.

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