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Claire Spottiswoode (Department of Zoology) and Marjorie Sorensen (Goethe ̽��ֱ�� Frankfurt am Main) discuss why several species of migratory songbirds sing a great deal in Africa when their breeding grounds are thousands of kilometres away.

Professor Nick Davies, who gives this week’s , has been studying reed warblers for more than 30 years – and has unlocked many of the secrets of their interactions with the cuckoo. His work shines light on the evolutionary games played out in nature as species compete with environmental pressures, with other species, and with the opposite sex, to pass on their genes.

A study of reed warbler behaviour reveals for the first time that in assessing the risks posed by cuckoos the birds combine information from multiple sources. An ‘information highway’ provides one set of clues and personal encounters another. Only when both add up, do the birds take defensive action.

�ճ����Cambridge Animal Alphabet series celebrates Cambridge's connections with animals through literature, art, science and society. Here, O is for Owl, the researchers using their wing structure to inspire aeroacoustic developments, and the lavish drawings of them found in one of the world's first ornithologies.

�ճ����Cambridge Animal Alphabet series celebrates Cambridge's connections with animals through literature, art, science and society. Here, K is for Kingfisher. Look out for them among the swamp cypresses at the Botanic Garden, where the secrets behind their cyan and blue feathers are being studied by an extraordinary collaboration of scientists.

When you’re prey, being able to spot and assess the threat posed by potential predators is of life-or-death importance. In a paper published today in Animal Behaviour, researchers from the ̽��ֱ�� of Cambridge’s Department of Psychology show that wild jackdaws recognise individual human faces, and may be able to tell whether or not predators are looking directly at them.

�ճ����Cambridge Animal Alphabet series celebrates Cambridge's connections with animals through literature, art, science and society. Here, J is for Jay – a surprisingly clever corvid with the ability to mimic human voices and much more.

Juvenile zebra finches that experience high stress levels will ignore how their own parents forage and instead learn such skills from other, unrelated adults. This may help young birds avoid inheriting a poor skillset from parents – the likely natural cause of their stress – and becoming trapped by a “bad start in life”.

A newly-designed material, which mimics the wing structure of owls, could help make wind turbines, computer fans and even planes much quieter. Early wind tunnel tests of the coating have shown a substantial reduction in noise without any noticeable effect on aerodynamics.

First time ‘wolf in sheep’s clothing’ mimicry has been seen in birds. Host birds have evolved a general counter-strategy in which they defend against all birds with the mimicked plumage - cuckoos and harmless species alike.