
Molothrus aeneus
Arenal, Osa Peninsula and Monteverde are among five atlas places where the Bronzed Cowbird is recorded. Its records concentrate in the United States, Mexico, Costa Rica, Guatemala and Belize, with the atlas map showing where these records gather most thickly. There are about 241,000 records of this bird in the atlas across ten countries.
Records of Molothrus aeneus span the entire year, appearing in the atlas during every month.
Each bar is the share of its 200 month-dated grid cells with records in that month.
These are open occurrence records, so they show where people looked for and recorded the Bronzed Cowbird as much as where it lives. The atlas keeps a species' 200 best-recorded grid cells, so the map shows where records concentrate rather than its whole range. Cells are up to 25 km across, and every location is generalised to its cell.
Generalised encounter areas, not exact locations. Each shape is a grid cell coloured by how likely the species is there.
Conservation status not assessed here yet, so every location is generalised to its grid cell.