1. To be aroused by the mating rituals and/or calls of a Yellow Red Billed Hornbill
2. To have sexual thoughts and/or excitement with a very large seagull
3. Bird feeder sex
" I had my first african birdgasm at the local watering hole today."
"Dude, aren't they the best?"
"Fuck yeah, I was so aroused by its mating calls"