Haematocrit, eggshell colouration and sexual signaling in the European starling (Sturnus vulgaris)

One hypothesis to explain the blue–green colour of the eggs of many bird species is that it is a sexually-selected signal of the laying female’s quality, which males use to determine their investment. This hyp...

Source: BMC Ecology - June 27, 2016 Category: Biology Authors: Raime B. Fronstin, Stephanie M. Doucet and Julian K. Christians Source Type: research