This heron is frequently seen in the Turks and Caicos Islands and its main food is land crabs. I think the one at the villas roosts in one of our neem trees as he has surprised us several times. On one of my trips out to Blue Hills it was low tide and I spotted a Yellow-crowned Night Heron. Apparently they will go into the sea at low tide in search of marine crabs.
The Yellow-crowned Night Heron is usually grey with prominent black and white head. It is primarily nocturnal but as you can see from the photo, they will come out during the day and stalk their prey.
On your next visit to Provo, keep your eyes open as you are sure to see a variety of birds. Birdwatching is great in the Turks and Caicos Islands.