During what period did the North American Breeding Bird Survey (BBS) record an annual increase of about 2.04% in the phoebe's abundance across the continent?

Answer

Between 1966 and 2019.

BBS data supports a narrative of stability or growth, showing an annual increase of about 2.04% in abundance across the continent during the period spanning 1966 and 2019.

During what period did the North American Breeding Bird Survey (BBS) record an annual increase of about 2.04% in the phoebe's abundance across the continent?
raritybirdPhoebe