Nikon Monarch 7

aba events

2013 AOU Check-list Committee Proposals – Part 2

The second round of AOU Check-list proposals was released last week. The entire South America heavy set is available at the AOU website here (.pdf), but just like last time I’ll keep the focus on those that will potentially affect the ABA-Area.

The same disclaimer applies as well. It’s important to note that these are proposals on which the committee has yet to vote, or at least they have yet to make those decisions public, and as always there are some that are unlikely to make the cut formally but are still interesting from a systemics perspective for those who dig that sort of thing.

–=====–

Make changes to linear sequence in family Mimidae

Mockingbirds, Catbirds, and Thrashers are apparently due for some revision, as their relationships have been the subject of several molecular phylogenetic studies in the last few years. There’s nothing here particularly controversial, though species limits between Northern/Tropical Mockingbirds remain an open question.

IMG_8313
Northern Mockingbird, photo by Nate Swick

–=====–

Split Nutting’s Flycatcher into two species: Myiarchus nuttingi and Myiarchus flavidior

Nutting’s Flycatcher consists of two subspecies, the northern inquietus of western Mexico and the southern flavidior that ranges from southern Mexico to Costa Rica. Based on differences in voice, preferred habitat, and plumage, it is proposed that the two populations are distinct enough to be considered species in their own right. All ABA-Area records come from the northern inquietus population, so no new species would be added to our list. The name Ridgway’s Flycatcher is proposed for flavidior.

–=====–

Add Common Moorhen Gallinula chloropus to the AOU Checklist

When Common Moorhen was split along Old World/New World lines our Gallinula became Common Gallinule and Common Moorhen was relegated to Eurasia. At almost the same time this decision was finalized, however, a Gallinula sp was collected on Shemya Island, Alaska. That specimen was determined to be the newly split Common Moorhen, adding the species to the North American lists as a naturally occuring vagrant.

–=====–

Merge all North American rosy-finches into Leucosticte tephrocotis

Undoubtedly the most controversial proposal on this particular docket. Examination of the sequence data from 201 rosy-finches of the three North American species, along with other Eurasian finch species, found that the North American rosy-finches are not as distinct as originally thought. The differences between them are primarily defined by local adaptation rather than historical relationships, theoretically making the whole rosy-finch complex on this continent an example of clinal variation, albeit one obscured by their patchy distribution.

I’m not a geneticist by any means (I can’t even convincingly play one on TV), so I’m not sure what to make of all of this but the findings seem compelling. If lumped, it is proposed that the species go by the name American Rosy-finch.

–=====–

Change the linear sequence of Haemorhous finches

Another fairly straight-forward rearrangment of a genus based on genetics. The North American “Purple” finches used to be placed firmly in the genus Carpodacus along with Old World rosefinches. They’ve since been carved out with the old but still bloody genus Haemorhous resurrected for them. This is just a minor fixing of the trio’s spots in relation to each other.

–=====–

Change the citations for nine species described by Thomas Say

We close with a little historical drama. Sort of. Thomas Say was an influential naturalist and taxonomist of the late 18th and early 19th centuries. He’s perhaps most familiar to birders as the inspiration for the Say’s Phoebe, named after him by Charles Bonaparte (he of the gull).

In 1819 and 1820 Say made expeditions to the Rocky Mountains under the command of a Maj. Steven Long, the results of which were published in the Account of an expedition from Pittsburgh to the Rocky Mountains compiled by Edwin James and published in what was always thought to be 1823. As such, the authority for all the species described in that text, including those western stalwarts Rock Wren, Band-tailed Pigeon, and Long-billed Dowitcher among others, was cited as “Say, 1823, in Long, Exped. Rocky Mount.”

As it turns out, the James title was published in December of 1822, so the date needs to be changed. Also, the role of Edwin James was historically minimized and as the primary editor of the account he should be so noted. So the citation for those species described in the aforementioned title will now read “Say, 1822, in James, Acct. Exped. Rocky Mount.”

So maybe not all that dramatic after all.

The entire list of proposals is available here.

Facebooktwitter
The following two tabs change content below.
Nate Swick

Nate Swick

Editor, Social Media Manager at American Birding Association
Nate Swick is the editor of the American Birding Association Blog, social media manager for the ABA, and the host of the American Birding Podcast. He lives in Greensboro, North Carolina, with his wife, Danielle, and two young children. He is the author of Birding for the Curious and The ABA Field Guide to Birds of the Carolinas.
Nate Swick

Latest posts by Nate Swick (see all)

  • From the Rosy Finch proposal, it says, “Brown-capped Rosy-Finches hybridize with Brown-capped Rosy-Finches in the Bitterroot Mountains in Idaho and Montana.”

    Really?

    From the proposal to change the citation for Dusky Grouse it says, “I recommend that the authority for the following species be changed from “Say, 1823, in Long, Exped. Rocky Mount.” to “Say, 1822, in James, Acct. Exped. Rocky Mount.”: Dendragapus obscurus (Blue Grouse).”

    Should we give up on Dusky Grouse then?

  • Morgan Churchill

    typos happen

  • Just to give Thomas Say a little bit more of the due that has long been denied him, please remember that it isn’t just Say’s phoebe that is named for him — but all three of them, filling as they do the genus Sayornis.

  • Joe, I don’t understand what you mean about “giving up on” the dusky grouse.

  • Joe Morlan

    The proposal, presumably intended to change only the citation, also changes the English name from Dusky Grouse back to Blue Grouse.

  • Apparently that typo has been corrected.

American Birding Podcast
Birders know well that the healthiest, most dynamic choruses contain many different voices. The birding community encompasses a wide variety of interests, talents, and convictions. All are welcome.
If you like birding, we want to hear from you.
Read More »

Recent Comments

Categories

Authors

Archives

ABA's FREE Birder's Guide

If you live nearby, or are travelling in the area, come visit the ABA Headquarters in Delaware City.

Beginning this spring we will be having bird walks, heron watches and evening cruises, right from our front porch! Click here to view the full calender, and register for events >>

via email

Enter your email address to subscribe to this blog and receive notifications of new posts by email.

  • Announcing the 2017 ABA Young Birders of the Year! February 28, 2017 10:48
    The judges have reviewed all of the outstanding entries. ABA staff has compiled the scores. After much anticipation, we are thrilled to announce the winners of the 2017 ABA Young Birder of the Year Contest! Your 2017 ABA Young Birder of the Year in the 14-18 age group is 18-year-old Johanna Beam from Lyons, Colorado. […]
  • Open Mic: Birding opens up a new appreciation for the Sonoran Desert December 1, 2016 5:02
    In 2014 I was given the opportunity to go birding for the first time as part of a new All About Birds Program. Without previous experience, I decided to take the offer the staff at Ironwood Tree Experience gave me. […]
  • Birding Alaska and an Interview with Dr. Nils Warnock October 25, 2016 6:57
    Did you know the Bar-tailed Godwit has the longest non-stop, flapping flight migration of any bird in the world? Learn more from young birder Dessi Sieburth and Audubon Alaska's Dr. Nils Warnock. […]

Follow ABA on Twitter