Report of the California Bird Records Committee: 2000 Records
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REPORT OF THE CALIFORNIA BIRD RECORDS COMMITTEE: 2000 RECORDS TRISTAN McKEE, P.O. Box 631, Ferndale, California 95536 RICHARD A. ERICKSON, LSA Associates,20 ExecutivePark, Suite 200, Irvine, California 92614 ABSTRACT: In 2000, the California Bird RecordsCommittee reacheddecisions on 165 recordsof 78 species,endorsing 116 of them. New to Californiawere the GlossyIbis (Plegadis falcinellus), seen and photographedwest of Calipatria,Imperial County,and Nutting'sFlycatcher (Myiarchus nuttingi), extensivelydocumented in Irvine,Orange County. From Southeast Farallon Island, San FranciscoCounty, in the late1980s, onespecimen and one in-hand record of theAlder Flycatcher (œmpidonax alnorum) predateother acceptedrecords. California's bird list now standsat 616 species,nine of whichare not native. This 26th reportof the CaliforniaBird RecordsCommittee (hereafter the CBRC or the Committee) details the evaluation of 165 records of 78 species.Although most recordspertain to birdsfound in 2000, the period coveredby this report spansthe 37 yearsfrom 1964 to 2001. Elevenof these records were reassessments of earlier Committee decisions. The Committeeaccepted 116 records,four of them reassessed,involving 52 species.The acceptancerate of 70.3% was below the Committee'smean but consistentwith percentagesthrough the 1990s; Morlanand Rottenborn (2000) discussedtrends in acceptancerates thoughthe CBRC's history. Forty-tworecords were not acceptedbecause of insufficientdocumentation or becausedescriptions were inconsistentwith known identificationcriteria. Sevenadditional records were not acceptedbecause of questionsconcern- ing the bird'snatural occurrence. Counties best representedby accepted recordswere San Diego (15 records),San Francisco(15, 14 of which were fromSoutheast Farallon I.), Imperial(11), Inyo(9), Orange(9), Monterey(7), and San Mateo (7). Recordswere acceptedfrom 15 other counties. Highlightsof this report includethe addition of two speciesto the Californialist, the GlossyIbis (Plegadis falcinellus) and Nutting's Flycatcher (Myiarchusnuttingi). Reportsof Markham'sStorm-Petrel (Oceanodroma raarkharai),Masked Duck (Noraonyx dorainicus), Wood Sandpiper (Tringa gareola), and Slaty-backedGull (Larus schistisagus),potential first state records,were not acceptedbecause documentation for these reportswas insufficient to establish identification or inconsistent with known identifica- tion criteria.The Pink-backedPelican (Pelecanus rufescens), Darter (An- hingaraelanogaster), and Blue Mockingbird (Melanotis caerulescens) were not acceptedbecause of concernsover questionablenatural occurrence. The CBRC placed the Blue Mockingbirdon the SupplementalList (see Patten and Erickson 1994) at its January 2002 meeting. With these changes,California's list stands at 616 species,nine of whichare nonnative and two of whichhave been extirpated within historical times. Acceptance of the Greater Sandplover(Charadrius leschenaultii), Common Green- shank(Tringa nebularia),and EyebrowedThrush (Turdus obscurus) to the statelist will be addressedin the next report. Recordsof the NazcaBooby Western Birds 33:175-201, 2002 175 REPORT OF THE CALIFORNIA BIRD RECORDS COMMITTEE: 2000 RECORDS (Sula granti), FalcatedDuck (Anas falcata), DemoiselleCrane (Anthro- poidesvirgo), Whooping Crane (Grus americana), Eurasian Collared-Dove (Streptopeliaclecaocto), Yellow-breasted Bunting (Emberiza aureola), and Black-backedOriole (Icterus abeillei) are currentlyunder consideration. Other highlightsof this report includethe state'ssecond Shy Albatross (Thalassarche½auta) and Smew(Mergeflus albellus), the state'sfirst two Alder Flycatchers(Empidonax alnorum), a juvenileShort-tailed Albatross (Fhoebastriaalbatrus), two Dark-rumpedPetrels (?terodroma phaeopygia), a Wilson'sPlover (Charadrius wilsonia), a EurasianDotterel (Charadrius morinellus),a Long-billedMurrelet (Brachyramphus perclix), and a Field Sparrow(Spizella pusilia). California'sfirst springrecord of Blue-headed Vireo (Vireo solitarius) and second interior record of Sedge Wren (Cistothorusplatensis) were accepted.Species recorded in especiallyhigh numbersin 2000 includedthe LouisianaWaterthrush (Seiurus mota½illa; four acceptedrecords, double any previousyear's) and PaintedBunting (Passerina½iris; nine, the highestever in a year). The listof speciesreviewed by the CBRC is postedat the WesternField Ornithologists'website (http://www.wfo-cbrc.org). This sitealso includes the entireCalifornia state list, the Committee'sbylaws, a reportingform for the direct e-mail submissionof recordsto the CBRC, the addressesof currentCommittee members, a photogallery of recentsubmissions (includ- ing severalbirds published in thisreport), a listof relevantpublications by CBRC members,and other informationabout the CBRC, WFO, and its journal, IMesternBirds. All documentationreviewed by the CBRC, includingcopies of descrip- tions, photographs,videotapes, audio recordingsand Committee com- ments,is archivedat the WesternFoundation of VertebrateZoology, 439 Calle San Pablo, Camarillo,CA 93012, and is availablefor publicreview. The CBRC solicitsand encouragesobservers to submitdocumentation for all specieson the review list, as well as speciesnot on the state list. Documentationshould be sent to Guy McCaskie,CBRC Secretary,P.O. Box 275, ImperialBeach, CA 91933-0275 (e-mail:[email protected]). Committee/\/ews. The Committee'svoting membershipafter the 19 January2002 annualmeeting consisted of Luke W. Cole, Jon L. Dunn, RichardA. Erickson(chairman), Kimball L. Garrett (vicechairman), Tristan McKee, JosephMorlan, MichaelM. Rogers,Mike San Miguel, Scott B. Terrill,and John C. Wilson.Guy McCaskiecontinued his role as nonvoting secretary.Recent Committee members who alsovoted on many of the recordsin this report includeRobert A. Hamilton,Matthew T. Heindel, AlvaroJaramillo, Guy McCaskie, Michael A. Patten,Peter Pyle, Stephen C. Rottenborn,and Daniel S. Singer. At the January2002 meeting,the Committeevoted to remove the ReddishEgret (Egretta rufescens) from the reviewlist. The Committeealso votedto establishthree groupsin which recordsmay be acceptedat the species-pairlevel: Galapagos/Hawaiian Petrel (Pteroclromaphaeopygia/ sandwichensis),Masked/Nazca Booby (Sula dactylatra/granti), and White/ Black-backedWagtail (Mota½illa alba/!ugens). To be admittedto the review list, pairs must involveclosely related species in which the species-level 176 REPORT OF THE CALIFORNIA BIRD RECORDS COMMITTEE: 2000 RECORDS identificationof a significantpercentage of recordscannot be resolved.We nonethelessencourage observers to make everyreasonable effort to estab- lishthe identificationof all individualsto species. Format and Abbreviations.As in otherrecent CBRC reports,records are generallylisted geographically, from northto south,and/or chronologically by firstdate of occurrence.Included with eachrecord is the location,county abbreviation(see below), and date span. The date span usuallyfollows that publishedin North American Birds (formerlyAmerican Birds and Field_ Notes) but, if the CBRC acceptsa date span that differsfrom a published source,the differingdates are italicized.Initials of the observer(s)responsible for findingand/or identifyingthe bird(s)--ifknown and if theyhave supplied supportivedocumentation--are followed by a semicolon,then the initials,in alphabetizedorder by surname,of additionalobservers submitting support- ive documentation,then the CBRC recordnumber consisting of the year of submissionand chronological number assigned by the secretary.All records are sightrecords unless otherwise indicated: initials followed by a dagger(t) indicatethe observersupplied a supportivephotograph, (:]:) indicates video- tape, (õ) indicatesa voice recording,and (#) indicatesa specimenrecord, followedby the abbreviation(see below) of the institutionhousing the specimenand that institution'sspecimen catalog number. An asterisk(*) before a species'name indicatesthat the speciesis no longeron the CBRC reviewlist. The first numberin parenthesesafter the species'name is the numberof recordsaccepted by the CBRC throughthis report; the secondis the number of new recordsaccepted in this report (becausethis number excludesrecords thought to pertain to returning individuals,it may be zero).Two asterisks(**) after the species'total indicate thatthe numberof acceptedrecords refers only to a restrictedreview period or includesrecords accepted for statisticalpurposes only; see Roberson (1986) for more information. When individualbirds return to a locationafter a lengthyor seasonal absence,each occurrenceis reviewedunder a separaterecord number, and Committeemembers indicate whether or not they believethe bird is the sameas one acceptedpreviously. Such decisions follow the opinionof the majorityof membersand, if a bird is considereda returningindividual, the totalnumber of recordsremains unchanged. Althoughthe CBRC doesnot formallyreview the age, sex,or subspecies of each bird, informationon thesesubjects is often providedduring the review process,and in some casesthe Committee achievesa strong or unanimousconsensus. We report much of this information. The CBRC usesstandard abbreviations for Californiacounties; those used in this report are COL, Colusa;DN, Del Norte; HUM, Humboldt;IMP, Imperial; INY, Inyo; KER, Kern; LA, Los Angeles;MRN, Marin; MEN, Mendocino;MOD, Modoc;MNO, Mono; MTY, Monterey;ORA, Orange; RIV, Riverside;SAC, Sacramento;SBE, San Bernardino;SD, San Diego; SF, San Francisco;SJ, San Joaquin; SLO, San Luis Obispo; SM, San Mateo; SBA, Santa Barbara; SCL, Santa