Tosefta sur Téroumot 10:12

[With regard to ritually] clean eggs that one boiled with unclean eggs: If [the unclean eggs] are of sufficient quantity to impart taste [to the clean eggs], the [clean eggs] are forbidden, and if not, they are permitted. [With regard to] eggs that one boiled and found in one of them a baby chick: If [the egg with the chick] is able to impart taste [to the clean eggs], they are forbidden, and if not, they are permitted. Abortive eggs ("גיעולי ביצים", per Jastrow, alt., "scalded eggs [cooked with unclean eggs]," per Rashi, Hul. 64b:2) are permitted for eating. Spoiled eggs ("ביצים מוזרות," lit. "strange eggs," see Hul. 12:3): A hearty soul may eat them. [If] he found blood in one of them, he throws away the blood and eats the rest.