Hi, was just wondering if 2 week old chicks can squeeze through the holes in chicken wire? Do they try to escape? What is too big a space for them at 2 weeks old? I want to put them in a space that is about 10x10 feet. I have 21 chicks. I will put the heat lamp in one corner for them. Enclosed draft free space. Temps will be in the mid to high 40's at night. Is this ok?