obvious patches of fur in cage

Question
I have recently started raising rabbits and now have 5 total. One buck and 4 does, I have them all in devided cages to where they can be seperated at times; but recently, I have been noticing large quantities of fur laying around in the cage floor. I was wodering, is this normal? Should I be concerned?

Answer
Dear Michelle,

If the bunnies are separated, they still could be tufting each other through the grids separating them.  Or the females could be having false pregnancies.

Please see:

www.bio.miami.edu/hare/breeding.html

Hope it helps.
Dana