Last night happened, what many had feared: our little nest was cruelly murdered!
Scully and Mulder suspect an evil squirrel made his way through the kitchen window, and hid in the cupboard till everyone had gone to bed. Then this evil squirrel made his way to the little nest and had himself a dinner party.
Beneath you can what's left of what was once, the beginning of new life.
Personally I blame Barney.