Protoporphyrin (PP) and biliverdin (BV) give rise to the enormous diversity in avian egg coloration. Egg color serves several ecological purposes. including post-mating signaling and camouflage. Egg camouflage represents a major character of open-nesting birds which accomplish protection of their unhatched offspring against visually oriented predators by cryptic egg coloration. https://bookmarksaifi.com/story19588731/epidemiological-aspects-and-differential-diagnosis-of-the-cutaneous-round-cell-tumors-in-dogs