Science news articles about 'blue eggs'

Bright blue eggs keep males keen on fatherhood.

... will be celebrated today as the ingredients that brought the large blue butterfly back from the dead. This rare and mysterious ... and masterminded its top-secret reintroduction using large blue eggs taken from the island of Öland in Sweden ...

... of filming, the video captures the hen patiently incubating her clutch of four pale blue eggs through rain and shine, and then follows the parents raising their hungry chicks, starting ...

... years and has a particular fascination with the bright blue colour of their eggs. To test a theory on the purpose of bright ... , males whose nests contained the brightest blue eggs fed their newly-hatched babies ... indicate a healthier female and brighter blue eggs. Eggs laid by a healthier female seemed ...

... is a lovely sign of coming spring. But the little songbird with the orange-red breast and bright blue eggs has some not-so-lovely relatives: the crocodile ...