Parkesia noveboracensis
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 and August, with the widest coverage in May, June, July and August. 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: 1 square of 25 km carry records for Northern Waterthrush in and around Algonquin Provincial Park, and the 1,156 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, the Osa Peninsula and Corcovado are the three atlas places where the Northern Waterthrush is recorded, with records concentrating in the United States, Canada, Belize, Costa Rica and Panama. The atlas holds about 553,000 open records of this bird from 17 countries, and the map shows where these records concentrate.
Of the 8 species with an atlas page recorded in and around Algonquin Provincial Park, the Northern Waterthrush is the 5th most recorded.
The full atlas page, and everywhere else it is recorded