
Circus pygargus
Ngorongoro Conservation Area, Serengeti National Park and Lake Manyara National Park are among the four atlas places where Montagu's Harrier is recorded. Records gather most thickly in France, Mali and Spain, with the atlas holding about 168,000 open records of this bird from 32 countries. Its map follows where these records concentrate.
Records are seasonal, peaking from April to August. The thinnest months for records are October through February.
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 Montagu's Harrier 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.