Love-shy panda artificially inseminated

Britain's only female giant panda, Tian Tian, has been artificially inseminated after failing to mate with her male partner Yang Guang, Edinburgh Zoo said Tuesday.

Dining habits of breeding terns revealed

Western Australian researchers have used stable isotope ratios from the tail feathers of bridled terns (Onychoprion anaethetus) on Penguin Island to assess how their feeding habits vary during the breeding season.

How the echidna lost its venom

(Phys.org) —The function of a spur on the hind leg of echidnas has been revealed by research at the University of Sydney.

Fitness for toad sperm: The secret is to mate frequently

An increasing number of men suffer from fertility problems, especially in western society. The general belief is that many problems may be related to stress but it is possible that some of them may arise because men simply ...

Testosterone regulates solo song of tropical birds

(Phys.org)—In male songbirds of the temperate zone, the concentration of sex hormones is rising in spring, which leads to an increase in song activity during the breeding season. In the tropics, there has been little evidence ...

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