We were cycling the Queen Charlotte trail in NZ. Every morning we got woken up to this. Kicked off at about 3:30am and by 4:15am it was at a fever pitch, with no chance of falling back asleep. Some of them sounded like a mobile phone’s ring tone. At about 6am the raucous erm dawn chorus died down and we could have a bit of snooze, until it was our turn to get up.
The sharp eared ones among you, will hear the “tell tell” sound of Hilleberg vs Exped, at the end of this clip 🙂