Crest (feathers) Crest (feathers) The crest is a prominent feature exhibited by several bird and other dinosaur species on their heads. The crest is made up of semiplume feathers: a long rachis with barbs on either side. These are plumulaceous feathers, meaning that they are soft and bendable. In birds, these semiplumes are common along the head, neck, and upper back, and may be used for buoyancy and sensing vibrations. Crests on birds are generally used for display purposes. Cockatoos and their smaller cousins, cockatiels, are part of the parrot family Cacatuidae found in Australia, the Bismarck Archipelago and the Philippines, and
Calamus caryotoides Calamus caryotoides Calamus caryotoides (also "Palmijuncus caryotoides"), more commonly known as fishtail lawyer cane is a North-East Queensland tropical forest climbing palm with very thin () flexible trunks; no crownshaft; small spikes; dark green, glossy, fish-tail shaped leaves reaching up to high ( spread); and very thin hooked flagella. It tends to clump and grow up into the shaded understory of Queensland's wet tropical forests, and is a close relative of the more infamous "Calamus radicalis" (aka Wait-a-While). The Cairns Botanical Gardens records local Yidinydji, Yirrganyydji, Djabuganydji, and Gungganydji use "Calamus caryotoides" (also known to Yidinydji as Bugul, pronounced BOOK-KOOL)