Start of Breeding season...

I remember Robin (I think it was Robin) talking about how some of her geckos are already starting to breed or are ready to breed (Ovulationg I guess), and she wondered why some start earlier than others. Could it be that the first geckos that hatch breed earlier than the others? Like, a female wil lay say 12 clutches. Would the geckos that were laid first and hatch first be ready to breed first, and this is why some of the geckos are ready to breed before the others? Instead of just all geckos being ready at the same time of the year, around February.

May be a dumb question, but I was just curious.

Thanks!