I've got a batch of chicks that are 2.5 weeks old. Starting just before the 2 weeks old, I lost one bird three days in a row and lost another yesterday. The birds that are dying are smaller- are they getting bullied? Maybe just genetically weak? Should I give them antibiotics? Also- this is my second batch of quail babies that has ended up with one of the chicks with a tilted neck. Like it just hangs over like it's broke. Still eats grows and runs but hangs over. Vitamin deficiency? Bonked?