Colony of Bats is a Letter featured Battlefield V. It is found in the chapter Wolf and Dog of the Nordlys War Story.
Transcript[]
Dear Cass,
Thank you for asking - yes - we are enjoying watching the various wildlife that flies over the house, it is so rich and varied, you would love it. We see swifts and there's a little colony of bats somewhere that we see most evenings. The red sparrow flies at dawn.
I hope that answers your question.
Clara