Troglodytes aedon
Drawn from open occurrence records in and around Iguazú 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: 1 square of 25 km carry records for House Wren in and around Iguazú National Park, and the 8,961 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 House Wren is recorded, with records gathering most thickly in the United States, Canada, Costa Rica, Colombia, and Mexico. The atlas holds about 2.5 million open records of the species across 15 countries. This map tracks where those records concentrate rather than the bird's entire range.
Of the 55 species with an atlas page recorded in and around Iguazú National Park, the House Wren is the 6th most recorded.
The full atlas page, and everywhere else it is recorded