My 4 girls are 3 weeks old and appear very healthy. They seem to have started "tanking up". The last 2 days, they have consumed an entire quart waterer. Is this normal or does it show a problem with the rest of their diet?? I give them medicated Sunfresh feed which they eat 1 quart / day. They go outside to their run 3-4 times per week and eat gnats and red spider mites that are all over area.