Why didn't this story get any American press coverage?
Here's the thing, researchers have been observing great tits near Oxford since 1947, so there is many years of data to draw upon. The birds are laying their eggs earlier, than they used to. This matters because the great tit chicks have about 2 weeks to mature, so they eat lots of abundant caterpillars. Lab testing shows that caterpillars show up at a certain temperature. It appears the great tits are able to coincide their breeding, so that there will plenty of food for their brood.
Other birds, can have trouble with changing their breeding time to match up with their food sources.
Here's an evolution question, is it better to set your biological clock by amount of daylight, or by temperature.
Yes, I know I'm juvenile.
Posted by joncim at May 13, 2008 08:42 PMI am guessing that you wrote about that just so you could write "tits"!
Posted by: Trina at May 14, 2008 09:38 AM