When on earth, iNaturalist user or not, we will come across something UGLY at least once. So, regardless whether you have observed it or not, what do you think is the ugliest bird or bird sound?
For me, the worst are (not in order)
- Pallas’ gull calls
- Marabou stork
- Brown bookbook
- Large-billed crow calls
- Common potoo
- Sri Lanka frogmouth (and its calls)
- Wandering albatross beak vibration
- American bittern call
- White bellbird song
- New world vultures
and countless more.