Rita opened her mouth to speak a moment, but then she closed it again. To anwer this question, she really had to think a moment.
Stepping in for his more domestic partner, Pyro would explain:
"Wind dragons would need high elevations, consistent heat, and wind release chakra to stimulate hatching. Desert, scorch release dragons like myself moreso need that chakra nature, water, and mud. The eggs are about as large as they are going to get; since the eggs can remain dormant for months if not years depending on the species, you will notice that in optimal condition the eggs will begin to soften and turn a very noticeable color; that color will match the scales of the newborn dragon.
Dragon eggs will not usually hatch outside of its optimal conditions, so a few weeks more in a warm, dry, and high elevation with the sound of running water audible should hatch it. Have some gently cooked and tenderized meat nearby; the young one will be quite hungry, and if he was anything like Rita supposedly was, he could go wandering off into the forest-"
Rita would slightly blush at Pyro's teasing. It was not her fault that her egg sitters were so slow and lumbering, and the had left so many small places for her to slip through. Granted, she managed to fend for herself in the forest fairly well; even without full dragon breath she had been a rather bold one.
She hoped her children would not pick up that early habit; sure they might meet some wandering Nara in the forest who catches him or her when he or she was supposed to try to catch said individual, but then again, they might run into an Uchiha; and the implications were bad enough just at the thought.
"One last thing, runt. Chakras of similar natures, origins, and blood resonate together, and there needs to be a resonation before a dragon starts to follow you around without the intent on having a part of you for lunch and the rest for breakfast tomorrow. Normally that would take years to build up, but because baby dragons quickly learn where they can find food and secure shelter, their signatures more quickly adapt to the signatures of individuals consistntly at meal times and sleeping. Eat with the dragon every day that you can and, after a few weeks or even if you're brave enough on day five, have the dragon sleep with you. Parents would do this no doubt, but you are of the... fleshier make-up so the dragon might try to have a midnight snack of your arm."
Now why Pyro consistnly returned to a caution about being tasted might would seem a mystery until, realizing that he was bringing up the warning without bringing up the warning, explained this bit as well.
"A dragon loves the taste of things that it consitently eats in its early days. Rita growing up in the Nara world fell in love with deer; Sandworm was much more common in my neck of the world. As long as no traumatic experience accompanies it, then the most frequent three meals tend to be what a dragon like to eat for the rest of his life-"
"Not to interrupt, but why do you keep saying he? It could be a she-"
Pyro rolled his eyes. Even in natural speech it was so much more convenient to just assign a talking gender and call it a day; constantly referring to he or she would be burdensome.
"- Also, female dragons are somewhat different. Our tastes are more centered around chakra retention in the muscles. Deer tended by Nara tend to hold more stored reserves in their muscles and have less fat, making them quite delectable. They taste better raw because you don't lose half the energy from cooking or excessive handling."
"... right. Well, being human, I imagine a dragon might would give you issues in trying to eat you-"
"Only if you don't teach the young dragon to dissociate humans with a food source. Unless humans are even easier than food that you can catch and deliver yourself, a young dragon's first taste of human might be more experimental than predatory. To keep that from being you or any of your smaller compatriots, you need to have some yourself and puke in front of the dragon; the young dragon will quickly come to believe, at least for the time being, that human is poisonous. They might try it anyways at a later date, but it's all about not making it an appealing option.
As Pyro said, if they eat it more frequently than other things then you will have a village predator problem, and since human ninjas can have fairly large chakra reserves, avoid letting that become a meal. She'll fall in love with it though she can't have it nearly as often as diet requires. That goes for ninja beasts too.
One more very important village dragon forewarning. Once a dragon starts becoming old enough to mold chakra, she may want to go about playing with the chakra natures available to her; scorch release obviously is very hot and thus very hazardous to buildings and organic life alike. She might even play some tricks on individuals with Yin release or alter her size with yang release; the overall experience is likely best experienced outside of the village setting. Teaching her early some of your specialty techniques can be a very rewarding-"
"Now YOUR doing it."
"Doing what?"
"Calling the unborn hatcling a she when she could be a he."
Rita blinked.
Pyro cackled.
"Opposites attract, but sames stick together. I hope you got all that; there is much more that you'll find out when the dragon hatches. Every hatchling is a little different."
A pause would follow before Rita would frown somewhat. It was not an angry sort of frown, nor a terribly distressed one; it was melancholic. Sheltering her eggs from the pilfering insects of Iwagakure, the likes of Cervis, mother nature, and of course from the occasional ninja wanderer, and here she was parting with one. A few tears welled in her eyes at the thought.