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The hammer-headed bat is the largest bat in mainland Africa. [12] Males have wingspans up to 90.1 cm (2.96 ft), [ 13 ] and all individuals have forearm lengths exceeding 112 mm (4.4 in). [ 12 ] It has pronounced sexual dimorphism , more so than any other bat species in the world, [ 12 ] with males up to twice as heavy as females.
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The first observation of malaria in bats dates to the end of the 19th century when Dionisi described gametocytes in the blood of a bat in 1898. The type species of this genus ( Hepatocystis kochi ) was described by Laveran in 1899 from the blood of a primate and he named it Plasmodium kochi .
Bats had substantial difficulty catching the clicking moths compared to silent controls, and ate the B. trigona moths when they had the opportunity, thus refuting the hypothesis that the clicks were warning the bats of moths' toxicity. Moth clicks also disrupted the stereotypical pattern of the bats echolocation, confirming the clicks' jamming ...
Generally a bat social call is not tonal, in other words it does not consist of a musical type note. Some bat detectors do not produce an accurate recording of a bat social call. Typically bat social calls use a lower frequency range than echolocation calls, and can thus be heard further away. Sometimes a bat will make a social call while ...
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The bonnethead (Sphyrna tiburo), also called a bonnet shark or shovelhead, [3] is a small member of the hammerhead shark genus Sphyrna, and part of the family Sphyrnidae.It is an abundant species in the littoral zone of the North Atlantic and the Gulf of Mexico, is the only shark species known to display sexual dimorphism in the morphology of the head, and is the only shark species known to be ...
The shape of its head with a long bill and crest at the back is reminiscent of a hammer, which has given this species its name after the Afrikaans word for hammerhead. It is a medium-sized waterbird with brown plumage.