Setophaga virens
Drawn from open occurrence records in and around Algonquin Provincial 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 May, June, July, August, September and October, with the widest coverage in May, June, July, August, September and October. 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: 2 squares of 25 km carry records for Black-throated Green Warbler in and around Algonquin Provincial Park, and the 5,278 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.
Arenal and Monteverde are the two atlas places where the Black-throated Green Warbler is recorded, with records concentrating in the United States, Canada, Costa Rica, Guatemala and Mexico. The atlas holds about 809,000 open records of this bird across six countries, and the map shows the areas where these records concentrate.
Of the 8 species with an atlas page recorded in and around Algonquin Provincial Park, the Black-throated Green Warbler is the 2nd most recorded.
The full atlas page, and everywhere else it is recorded