Estrogen derived from the ovaries transforms the default (primitive) male-type feathers into female-type feathers by regulating the hormone systems within the feather follicles. Birds possess unique ...

Birds show an amazing diversity in plumage colour and patterning. But what are the genetic mechanisms creating such patterns? In a new study published today in PLOS Genetics, Swedish and French ...

We are at a critical time and supporting climate journalism is more important than ever. Science News and our parent organization, the Society for Science, need your help to strengthen environmental ...

WHEN you buy eggs from the supermarket, it is pretty standard to get a dozen eggs, usually brown. But some places sell white chicken eggs. So, is it true that the colour of an egg is determined by the ...