It has long been known that owls have extremely mobile necks. The birds have been recorded turning their heads entirely upside down, for instance, or rotating them through 270 degrees while keeping their bodies stationary. But some researchers suspect an owl’s neck is more flexible still.
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Food is often in short supply, so why would a toddler or young animal refuse to eat when it is available? A full explanation is still some way away, but biologists have developed several ideas that can help to explain why. Image: Muffet
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It’s an insect Jekyll and Hyde. A species of aphid that often forms a mutually beneficial relationship with ants will occasionally turn on its protectors, infiltrating their nest and sucking vital fluids out of their larvae. Image: binux
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The burrowing owls of Argentina have embraced town life. While owl nests in rural areas can be separated by as much as 15 kilometres, urban nests may be little more than 10 metres apart. So do urban owls stay faithful, like their country cousins? Image: Annette Herz
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If rats benefit from the kindness of strangers they are more likely to assist an unfamiliar rat in future. In doing so, they provide the first evidence of an unusual form of altruism that appears to violate evolutionary theory. Image: Capt’ Gorgeous
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