The
committee considered but did not accept seven
proposals for splitting and lumping North American
taxa. The following actions have been tabled but
may be revisited in the future:
[…] Merger
of Black-billed, Yellow-billed, and Eurasian Magpies into
a single enlarged Pica pica. (Four
years ago the AOU split the original P. pica into two
species, the Black-billed [P. hudsonia] and the
Eurasian [P. pica], while maintaining the Yellow-billed
as a separate species [P. nutalli].) […]
Hess, P (2005):
Checklist Changes Include New Species. Birding 37: 28-29.
