
Hirundo rustica
The Okavango Delta is the atlas park where the Barn Swallow is recorded, and its records concentrate most in the United States, Canada, Finland, Belgium and Luxembourg. This bird has about 3.2 million open records from 22 countries, and the map shows where these records concentrate.
Because this species is recorded in both the Northern and Southern Hemispheres, the months it is seen differ by region. Each place page displays the particular months recorded there.
These are open occurrence records, so they show where people looked for and recorded the Barn Swallow 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.