The Calling Of Owls

Each evening bird lover Tom stood in his backyard, hooting like an owl -
and one night, an owl called back to him. For a year, the man and his
feathered friend hooted back and forth. Just as he thought he was on the
verge of a breakthrough in interspecies communication, his wife had a
chat with her next door neighbor.

"My husband spends his nights... calling out to owls," she said.

"That's odd," the neighbor replied. "So does my husband."

Then it dawned on them.