22 June 2017
Bird eggs may be shaped by the way their mother flies
By Sam Wong
Eggs is eggs, but some are round while others are long and pointy – and now we finally know why. It’s all to do with birds’ flying ability, according to a new study.
There are many explanations for the variety of birds’ egg shapes. Take the idea that cliff-dwelling birds lay conical eggs that roll in a tight circle so they don’t fall off the cliff; or that clutch size dictates what shape of egg would make incubation more efficient.
https://www.newscientist.com/article/2138346-bird-eggs-may-be-shaped-by-the-way-their-mother-flies/
