Talk:List of birds of Massachusetts

July 3, 2020 revisions
Because of the large number of changes necessitated by the update to the Check-list of North and Middle American Birds which the American Ornithological Society published on June 30, 2020, the revisions to this article are presented here rather than in a long series of edit summaries. Changes are per the AOS unless otherwise noted.

Craigthebirder (talk) 02:18, 4 July 2020 (UTC)
 * Revise the references, counts, and text in the introduction.
 * Revise multiple families' common names per Clements.
 * Revise the sequence of species in family Phasiannidae (Pheasants, grouse, and allies).
 * Revise the sequence of species in genus Selasphorus (Hummingbirds).
 * Revise the sequence of species in family Rallidae (Rails, gallinules, and coots).
 * Revise the sequence of families in order Suliformes.
 * Revise the sequence of species in family Phalacrocoracidae (Cormorants and shags).

August 2021 revision
These are the changes made to update this list to the 2021 Check-list of North and Middle American Birds published by the American Ornithological Society (AOS) on June 29, 2021.

Craigthebirder (talk) 21:54, 10 August 2021 (UTC)
 * Revise the sequence of families in Order Passeriformes.
 * Split mew gull into common gull and short-billed gull and revise entries accordingly.
 * Revise the binomial of a cormorant species.
 * Revise the specific epithet of crested caracara.
 * Revise the genus and position of ruby-crowned kinglet.
 * Revise text, counts, and references as appropriate.