hatched April or may 2011 one laid an egg today, too close to the pond so I picked her up and toted her and the egg back up to the house in a pen (12x15 ft) put her some straw in the pen and some moss and laid the egg in the straw , she covered up the egg with the straw and left it alone so far . How long should I leave it or is the first few even worth trying to let them hatch ?