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Life & Evolution

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Lipizzan horse

DADDY ISSUE  Genetic analysis of Y chromosomes from modern stallions, such as this Lipizzan horse named Conversano Sessana, helped scientists trace the sires of all modern stallions back 700 years to Arabian and Turkoman stallions.

male cockatoo

ROCK ON  A male cockatoo (right) woos a female with vocal calls, blushing red cheek feathers, head crest erection and rhythmic drum performances in trees, using a self-fashioned drumstick.  

hawk moth

HIDDEN CONFLICT  How much a flower throat curves while narrowing to its base turns out to be important — but in opposing ways — to a pollinating hawk moth and the plant itself.

Life & Evolution

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