Sunday, December 23, 2007

Boyd's Forest Dragon

These amazing Lizards are only found from Townsville to Cooktown in the Wet Tropics. Previously named as part of an Asian genus of Dragon Lizards, they are now recognised seperately as Hypsilurus.
Dragon Lizards are 'Agamids' and the Boyd's has the typical habit of favouring the rear legs when on the ground. It gives them a bow legged gait, often described as like a little old man trying to run.
They have a sticky tongue which can shoot out up to 3cm, amd they use this to good effect picking up ants, one of their favourite foods.
Boyd's love sleeping on tree trunks, and are often seen at night clinging tightly to a tree, just like in the picture. They end up the same temperature as the tree, making it harder for things like the Amethystine Python to sense them.
This one is fairly light coloured, but in the morning they darken up, so as to better absorb heat from the air. They tend not to bask in the sun, but more rely on warm air circulating around them. I have seen Boyd's actually holding their body out so air can circulate around them.
Males tend to have larger heads and jaws, and I would say this one is male for that reason. Boyd's are very common at Cape Tribulation, despite being considered fairly rare by textbooks.

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