My peahen, Anastasia, recently died. Her mate, Rainbow, has changed behavior since she has been gone. It has been two weeks since she died. Even though Rainbow is in a large aviary along with three other grown peafowl (two peahens at least 2 1/2 years old and one male just at 3 years - Rainbow is their daddy) he has taken to staying in their peafowl house and sits on the perch most of the day. He has always been the dominant male but now he shows no interest in the other birds. He does get out to eat and drink, but stays alone in the peahouse most of the day. It is so sad. I think he is grieving for Anastasia. Am I being too sentimental? Do peafowl grieve?