Setophaga fusca
Drawn from open occurrence records in and around Acadia 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 May, June, July, August and September, with the widest coverage in May, June, July, August and September. 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 Blackburnian Warbler in and around Acadia National Park, and the 5,648 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 parks where the Blackburnian Warbler is recorded, with records gathering most thickly in the United States, Canada, Colombia, Ecuador, and Costa Rica. The atlas holds about 521,000 open records of this bird from six countries, and its map follows where they concentrate.
Of the 16 species with an atlas page recorded in and around Acadia National Park, the Blackburnian Warbler is the 4th most recorded.
The full atlas page, and everywhere else it is recorded