Male red jungle fowl can adjust the quality of sperm they produce, depending on how attractive the female fowl is.
Before OxSciBlog packs its bags and heads off on holiday for the summer there's just time to highlight the work of Oxford geology student David Ferguson.
David is writing regular updates for The Guardian's Science Blog about his mission to the Afar region of Ethiopia.
Final preparations are underway for our 3 July event for visitors from the World Conference of Science Journalists (WCSJ 2009).
It's easy to think of mass extinctions only in terms of the impact on animal species but of course plants suffered too.
Stephen Hesselbo of Oxford's Department of Earth Sciences reports in this week's Science on his research studying fossils to see how plants fared in a major extinction event 200 million years ago.
Last week the scientists behind two recent publications on carbon emissions urged negotiators at the Bonn climate talks to make phasing out CO2 emissions altogether part of any future strategy.
This week our fickle attitude to the wildlife around us was highlighted in two stories: one about the reintroduction of beavers to the US, the other about a proposed cull of grey squirrels in the UK.