Butorides virescens
Drawn from open occurrence records in and around Everglades National Park, aggregated onto a 25 km grid. A cell is matched by its centre, which can sit up to 16 km outside the boundary, so this covers the surrounding country too.
Occurrence records measure where people looked and found something, which is not the same as where the animal is. This is a relative likelihood, not a probability.
Records exist for January, February, March, April, May, June, July, August, September, October, November and December. A quiet month can mean the animal was absent, or that nobody was looking.
A grid cell is a square of the map, not a sighting: 3 squares of 25 km carry records for Green Heron in and around Everglades National Park, and the 13,888 records behind them were collected by other people and published openly. Nothing here counts animals, and a place with more records is not always a place with more animals.
Tortuguero is the atlas place where the Green Heron is recorded, and its records concentrate most in the United States, Canada, Mexico, Costa Rica, and Belize. The atlas holds about 1.2 million open records of the bird from ten countries, and the map follows where those records gather.
Of the 38 species with an atlas page recorded in and around Everglades National Park, the Green Heron is the 9th most recorded.
The full atlas page, and everywhere else it is recorded