
Setophaga virens
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.
Records are seasonal and peak from April to May and again from August to October. The lowest numbers of records occur from November through March.
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 Black-throated Green Warbler 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.