Prof. Nachum Ulanovsky took his entire Weizmann Institute lab to “bat island” near Zanzibar to record the activity of fruit bats. His team discovered that bats brains have an internal “global compass”. Head-direction neurons consistently point in the same direction across the entire island,
https://zuckermanstem.org/spotlight/going-to-the-ends-of-the-earth-to-better-understand-the-brain/