A data frame of Bird Conservation Region (BCR) codes. BCRs are ecologically
distinct regions in North America with similar bird communities, habitats,
and resource management issues. These codes are required to filter by BCR
using auk_bcr().
bcr_codesA data frame with two variables and 66 rows:
bcr_code: integer code from 1 to 66.
bcr_name: name of BCR.
Other data:
ebird_states,
ebird_taxonomy,
valid_protocols