August 2018 OverviewGo directly to the 2018 Updates & Corrections This is the 13th installment of Updates and Corrections following the publication (2007) of the 6th edition of The Clements Checklist of Birds of the World; because the Clements Checklist is tightly interwoven with the taxonomy for eBird, the checklist now is referred to as the eBird/Clements Checklist. The entire checklist (including the 2018 Updates and Corrections) is available as a downloadable spreadsheet (in Excel and .csv formats). This year’s spreadsheet version is eBird/Clements Checklist v2018, and was released on 14 August 2018. The spreadsheet contains 14 fields (data columns): sort v2018 – reflects the sequence of species, groups, and subspecies in eBird/Clements v2018 Clements v2018 change – a brief note to signal that a change from eBird/Clements Checklist v2017 occurred for that entry. Sometimes only a single change is made per entry; sometimes several changes are made. In all cases, please consult the Updates and Corrections – August 2018 page for a full explanation of these changes. text for website v2018 – a brief explanation of the change from Clements Checklist v2017 that occurred for that entry. The changes also are documented on the Updates and Corrections 2018 page. category – reflecting whether the entry on that line is a species; a subspecies; a monotypic group (i.e., a group that is equivalent to a single subspecies); or a polytypic group (a group composed of two or more subspecies). Thus, the total number of subspecies recognized in the eBird/Clements Checklist is the sum of all entries listed as “subspecies” and as “group (monotypic)”. English namescientific namerangeorderfamilyextinct – an entry (1) in this column means that the species or subspecies is extinct extinct year – reflects the year the species or subspecies went extinct (or, since the extinction date rarely is known with certainty, the last year in which it was reported); “xxxx” is used when the date of extinction is not readily accessible. sort v2017 – reflecting the sequence of species in eBird/Clements Checklist v2017 page 6.0 – reflecting the page number of the species in the last (sixth) print edition (2007) Here is a brief review of the changes that are introduced in the eBird/Clements Checklist v2017: SUMMARY STATISTICSSpecies 10,585 Subspecies 20,530 Groups 3,796 Families 250 (with 1 additional, extinct, family) SPECIESIn this year’s updates, we have a net gain from five new species, that is, species for which there was no entry at all in the previous edition of the eBird/Clements Checklist. Three of these are from South America, that seemingly inexhaustible source of new discoveries: Santa Marta Screech-Owl (Megascops gilesi), from Colombia, and two new species from Peru, Cordillera Azul Antbird (Myrmoderus eowilsoni) and Painted Manakin (Machaeropterus eckelberryi). At the other end of the world comes Rote Myzomela (Myzomela irianawidodoae), from Rote Island, Indonesia. Finally, we add another extinct species of columbid, Spotted Green Pigeon (Caloenas maculata); this species is very poorly known, but apparently was native to an island or an island group in the South Pacific. Another 36 species are newly recognized in the eBird/Clements Checklist due to “splits.” There is a loss of 7 species due to “lumps.”As before, we update the taxonomy and nomenclature of species for North America, based largely on decisions of theNorth American Checklist Committee (NACC), through the Fifty-ninth supplement to the American Ornithological Society’s Check-list of North American Birds (July 2018). We also are current with decisions of the South American Classification Committee (SACC) through 21 June 2018. GROUPS eBird/Clements Checklist has adopted the concept of the group, which initially was developed by eBird, a free, global online system to manage your bird records and bird lists. A “group” is a distinctive (field identifiable) subspecies or group of subspecies. The group is not a formal taxonomic unit, but often represents a potential future split (and so groups are a valuable taxonomic tool for the savvy birder). Groups first were added to Clements Checklist in December 2009 (Clements Checklist 6.5). In the eBird/Clements Checklist v2018, we add 136 new groups. Our attempt at arranging subspecies into groups is incomplete with respect to Red Crossbill (Loxia curvirostra). For this species, we recognize 12 monotypic groups, but we also list eight subspecies that are not identified as groups. These “hanging” subspecies are color coded in gray in the eBird/Clements Checklist to clarify that their status with respect to groups remains unresolved. Note that in eBird we also recognize 16 call types in Red Crossbill; at least some of these eventually may prove to be equivalent to a named subspecies. HIGHER LEVEL TAXONOMY One new order is added, Musophagiformes, for the Turacos (Musophagidae). Consequently we now recognize 41 extant orders. Two new families are added this year: Oceanitidae (Southern Storm-Petrels), and Platylophidae (Crested Shrikejay – formerly Crested Jay). The total number of extant families in the eBird/Clements Checklist increases to 250, with an additional extinct family (Mohoidae Hawaiian Honeyeaters), for a total of 251 families. We also extensively revise the sequence of orders among the nonpasserines, and the sequence of families in the nine-primaried oscines. The 250 extant families accepted by Clements Checklist are listed below, with the names of orders in bold CAPITAL lettering, and with an additional extinct family listed in brackets. We also provide the number of families in each order (in parentheses, after the name of each order), and the number of species in each family (in parentheses, after the name of each family). STRUTHIONIFORMES (1) 1 Struthionidae=Ostriches (2)
RHEIFORMES (1) 1.-family = Rheidae ).2 species of Rheas (2 )
FUTURE UPDATES The next annual revision that incorporates revisions to the taxonomy and nomenclature of the eBird/Clements Checklist will be released in August 2019. ACKNOWLEDGEMENTS Please continue to report potential errors, corrections, and suggestions for improvement to eBird/Clements Checklist (please send taxonomic changes, suggestions, or questions to firstname.lastname@example.org). Many of the errors that you find are ones that would have taken a long time to notice, so we appreciate your help, and we do want to hear from you. Please keep in mind, of course, that the easiest corrections or proposed revisions are ones that are accompanied by a supporting reference or citation. Denis Lepage, who administers Avibase, carefully reviewed our files, made useful comparisons with other taxonomies, pointed out errors, and helped with many taxonomic issues through this process; we are extremely grateful for his generous assistance. Les Christidis, Nigel Collar, David Donsker, Frank Gill, and Josep del Hoyo contributed many valuable insights on the classification of waterfowl; Frank and David also have gone out of their way to provide helpful suggestions across the board, and to be a sounding board on many issues related to taxonomy and nomenclature. Normand David provided helpful advice on some nomenclatural issues. We take full responsibility, of course, for any remaining errors. We are grateful to Terry Chesser for providing advance copies of works in progress, and to both Terry and to Van Remsen for their too-little appreciated roles in chairing regional classification committees. We also thank the following for their help in providing helpful comments on the eBird/Clements Checklist or for directing us to important literature for our consideration: Nicholas H. Acheson, Margaret and Richard Alcorn, Desmond Allen, Christopher Amano-Langtree, Nick Anich, Christian Artuso, Aaron Boone, Matt Brady, Paul Brooks, Jan Axel Cubilla, David Bishop, Matt Brady, Tayler Brooks, Paul Clapham, Jacob Cooper, Andrew Core, Ian Davies, John Dillon, Pete Dunten, Ted Floyd, James Fox, Benjamin Freeman, Mat and Cathy Gilfedder, Fabrico Gorleri, Hector Gómez de Silva, Alan Grenon, Jean-Sébastien Guénette, Heidi Guttschuss, Peter Hosner, Praveen J, Alvaro Jaramillo, Rajah Jayapal, Oscar Johnson, Peter Kaestner, Max Kirsch, Ethan Kistler, Peter Kovalik, Dan Lane, Niels Larsen, Raphaël Lebrun, Tony Leukering, Jack Levene, Anonymous in Manaus, Axel Mauruszat, Jay McGowan, Matt Medler, Fernando Medrano, Steven Mlodinow, Joe Morlan, Scott Olmstead, Tommy Pedersen, Christian Perez, Yoav Perlman, Suhel Quader, Martin Reid, Craig Robson, Michael Schrimpf, Holger Schritt, Glenn Seeholzer, Luke Seitz, Chris Siddle, David Slager, Tim Spahr, Andrew Spencer, Phil Tizzard, Wich’yanan Limparungpatthanakij, Matt Young, and Adam Winer, as well as the wider community of eBird users, the always astute members of the Taxonomy and Nomenclature group on BirdForum, and no doubt others who we inadvertently may have overlooked. Thanks to all for your support, and we look forward to your feedback. Thomas S. Schulenberg (Avian Taxonomist); Marshall J. Iliff, Brian L. Sullivan, and Christopher L. Wood (eBird Project Leaders); Thomas A. Fredericks (eBird Database Administrator); and Don Roberson.