Anhinga anhinga
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, with the widest coverage in January, February, March, April, May, 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: 12 squares of 25 km carry records for Anhinga in and around Everglades National Park, and the 42,565 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 and Arenal are the two atlas parks where the Anhinga is recorded, and its records concentrate most in the United States, Mexico, Costa Rica, Brazil and Belize. The atlas holds about 1.1 million open records of the bird from nine countries. Because the map shows where these records gather, it represents a partial view of the range.
Of the 38 species with an atlas page recorded in and around Everglades National Park, the Anhinga is the 2nd most recorded.
The full atlas page, and everywhere else it is recorded