i usually brood my chicks in the house to start with, but this time they were outside. they were in a rabbit cage, halfway up the walls was 1/2 x 1 and the rest of the wall was 1x1, sealed up tight. were fine at first, but 2 or 3 days later, i come out and the throats have been chewed out of them... I assume its a mouse, only thing small enough to fit... at what age do quail look less interesting to them?