I have recorded this video at the airstrip in Tendaba, Gambia in december.
I suspect that the rather highpitched and bouncy calls are the calls of Four-banded Sandgrouses (Pterocles quadricinctus) coming to drink at dusk...
So I would like to hear from e.g. experienced Africa-travellers if I am correct that it is Four-banded Sandgrouses?
Best wishes, Rune Sų Neergaard, Denmark