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Anneliese Givan

Animal Behavior

Behavioral Rhythms: Tidal Clock of Sea Lice

Behavioral Rhythms: Tidal Clock of Sea Lice

Scientists have discovered that sea lice have two body clocks: one which follows day/night circadian rhythms and another which follows the tide which rotates every 12.4 hours. This additional body clock allows the sea lice (Eurydice pulchra) to burrow at low tide and then return to the surface to feed when the tide returns.

bbc.com
Animal Communication: Chimpanzee Gestures

Animal Communication: Chimpanzee Gestures

In the wild, chimpanzees use a unique set of visual gestures in order to communicate with one another. These include both gestures and facial expressions that indicate their interests which range from expressing sexual interest to indicating another chimp to climb on their back. This webpage highlights a few of these gestures and what they mean.

bbc.com
Foraging: Cuttlefish Pretend to be Hermit Crabs to Catch Fish

Foraging: Cuttlefish Pretend to be Hermit Crabs to Catch Fish

This article and video highlights the unique methods which cuttlefish use in order to catch fish. Recently discovered by researchers, the cuttlefish transform their body shape and coloration in order to appear like a hermit crab. This becomes advantageous as hermit crabs do not hunt fish and therefore appear harmless to fish. Researchers suspect that this mimicry is a foraging behavior which allows them to catch more fish as fish do not sense a threat.

news.nationalgeographic.com
Mating Rituals: Superb Bird-of-Paradise

Mating Rituals: Superb Bird-of-Paradise

The birds-of-paradise exhibit extraordinary displays when attempting to attract a mate. This video highlights how the male Superb Bird-of-Paradise uses its feathers to transform from a 'normal' bird into a distinct, psychedelic smiley face pattern. Following its transformation, the bird continues to dance around to maintain its appearance to the female. You can also view other spectacular Birds-of-Paradise transformations on the Birds of Paradise Project webpage.

birdsofparadiseproject.org