Download the whole
atlas.
Every record the atlases have produced is here, free for non-commercial research, education, and public interest. Sign the terms once and the data follows you home in a flat CSV, a GeoTIFF, or a spatial package ready for ArcGIS or QGIS.
Data products
API access
The full atlas is available through a stable REST API for researchers and integrators. Authenticated keys are free; rate limits scale with institutional affiliation. Documentation follows OpenAPI 3.1.
GET https://api.nybba.org/v1/species/piranga-olivacea/blocks?atlas=III
Request an API key
Sensitive species
For nine sensitive species including Henslow's Sparrow, Short-eared Owl, and Bicknell's Thrush, precise coordinates are masked to block level in public downloads. Full-resolution data is available to qualified researchers under a separate data-use agreement.