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Nightingales match the pitch of their rivals in singing duels

Life

Nightingales match the pitch of their rivals in singing duels

Male nightingales respond to each other’s songs by whistling back at the same pitch when competing for territory, and they even copy the pitch of artificial whistle sounds

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Life

Unique egg patterns help drongos avoid getting duped by cuckoos

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Life

Shortage of male turtles could be solved by splash of cold seawater

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Life

Postmenopausal orcas seem to prevent sons from getting into fights

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Life

Basking sharks are one of the few warm-blooded species of fish

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Life

Amazing fossil hints mammals hunted dinosaurs three times their size

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Life

Fossil of pregnant ground sloth discovered with fetus inside

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Life

Pigs open doors to free companions in a possible show of empathy

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Environment

Mass fish deaths will occur more often in rivers as UK gets hotter

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Life

Bone disease in sabre-toothed tigers may be a sign of inbreeding

An analysis of bones from the La Brea tar pits in California reveals that sabre-toothed tigers and dire wolves had very high rates of osteochondrosis, which may stem from a dwindling gene pool as they neared extinction

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Life

Life’s hidden laws: The arcane rules of evolution and how they work

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Life

Birds from two different species raise chicks together in one nest

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Life

Birds are using anti-bird spikes to make their nests

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Life

Sex between two males is extremely common in wild macaque monkeys

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