Species: Phalaropus tricolor

Wilson's Phalarope
Species
    Kingdom
    Animalia
    Phylum
    Craniata
    Class

    Aves

    Order

    Charadriiformes

    Family

    Scolopacidae

    Genus

    Phalaropus

    Classification
    Other Global Common Names
    Falaropo Pico Largo, Pollito de Mar Tricolor - Pisa-n'Água - phalarope de Wilson
    Informal Taxonomy
    Animals, Vertebrates - Birds - Shorebirds
    Formal Taxonomy
    Animalia - Craniata - Aves - Charadriiformes - Scolopacidae - Phalaropus - Often placed in monotypic genus STEGANOPUS (AOU 1983). Based on allozyme data, clearly genetically distinct from other phalaropes; may not be part of monophyletic phalarope group (Dittman et al. 1989). However, combined allozyme, morphologic, and mtDNA data suggest that Wilson's phalarope evolved shortly after the phalarope lineage itself arose and that the phalaropes are monophyletic (Dittman and Zink 1991).
    Short General Description
    A 24-cm shorebird (phalarope).
    Migration
    false - false - true - Migrates northward through U.S. (mostly over interior prairies west of Mississippi River, uncommon along east coast) mainly April-May (Terres 1980). Migrates regularly through Middle America (September-October and mid-April to late May in Costa Rica), Colombia and Ecuador. Southward migration begins in mid-June (mostly females). The Great Salt Lake (Utah) has the world's largest concentration in fall (500,000-700,000 individuals) (Paton et al. 1992).
    Non-migrant
    false
    Locally Migrant
    false
    Food Comments
    Eats insects (larvae and adults), especially mosquitoes and crane flies. On salt flats may feed on alkali flies, brine shrimps, seeds of aquatic plants. Feeds as it walks along muddy shores, wades in shallow water, or swims in whirls.
    Reproduction Comments
    In the central and northern Great Plains (Minnesota, Nebraska, and North Dakota), arrives on the breeding grounds from mid-April to early May and departs from mid-August to early September (Roberts 1932, Howe 1972, Johnsgard 1980, Murray 1983). In Alberta, Manitoba, and Saskatchewan, arrives on breeding grounds from late April to early May and is observed until early September (Hohn 1967; Maher 1974; Reynolds et al. 1986; Colwell 1987; Colwell and Oring 1988a,b). Females arrive on the breeding grounds earlier than males (Reynolds et al. 1986, Colwell 1987), and commonly depart from breeding areas earlier than males, usually from early June to early July (Hohn 1967; Howe 1972; Colwell 1987; Colwell and Oring 1988a,b). <br><br>May renest after nest failure, and females are capable of laying multiple clutches (Colwell and Jehl 1994). Polyandry was first documented in Saskatchewan, where a color-banded female laid two clutches with two individual males (Colwell 1986a, Colwell 1987). Philopatry is uncommon, although males return to breeding areas in successive years more often than females (Colwell 1987, Colwell and Oring 1988b). Of 154 adult male phalaropes banded over four years in Saskatchewan, 16 percent returned to their previous breeding area in successive years, whereas only 2 percent of 69 banded adult females returned (Colwell 1987).
    Ecology Comments
    Reproductive success varies greatly (17-56%); most clutch failures result from predation (Colwell 1992). Exhibits annual variation in nest site selection, moving to deeper, more permanent wetlands in dry years (Hohn 1967, Colwell 1991).
    Length
    24
    Weight
    68
    NatureServe Global Status Rank
    G5
    Global Status Last Reviewed
    1996-11-26
    Global Status Last Changed
    1996-11-26
    Other Status

    LC - Least concern

    Conservation Status Map
    <img src="http://www.natureserve.org/explorer/servlet/GetMapGif?CA.AB=S5&CA.BC=S4&CA.MB=S4&CA.NB=S1&CA.NT=SU&CA.NS=SNR&CA.ON=S3&CA.PE=__&CA.QC=S3&CA.SK=S5&CA.YT=S2&US.AL=__&US.AZ=S1&US.AR=__&US.CA=SNR&US.CO=S4&US.DE=__&US.DC=__&US.FL=__&US.GA=__&US.ID=S3&US.IL=S1&US.IN=SH&US.IA=__&US.KS=S1&US.KY=__&US.LA=__&US.ME=__&US.MD=__&US.MA=S1&US.MI=S2&US.MN=S2&US.MS=__&US.MO=__&US.MT=S4&US.NN=__&US.NE=S4&US.NV=S2&US.NH=__&US.NJ=__&US.NM=S2&US.NC=__&US.ND=SNR&US.OK=__&US.OR=S4&US.PA=__&US.RI=__&US.SC=__&US.SD=S4&US.TN=__&US.TX=S3&US.UT=S2&US.VA=__&US.WA=S3&US.WI=S1&US.WY=S3" alt="Conservation Status Map" style="width: 475px; height: auto;" />
    Global Range
    H - >2,500,000 square km (greater than 1,000,000 square miles) - H - BREEDING: coastal British Columbia, southern Yukon, northern Alberta, central Saskatchewan, central Manitoba, southern Ontario, southern Quebec, northeastern New York, and New Brunswick, south to east-central California, central Nevada, central Utah, eastern Arizona, northern New Mexico, northern Texas, central Kansas, western Nebraska, eastern South Dakota, northern Iowa, northern Illinois, northern Indiana, and northern Ohio. Nonbreeders recorded in summer north to central Alaska, central Mackenzie, northern Saskatchewan, and Nova Scotia (McAlpine et al. 1988, AOU 1998). NON-BREEDING: mainly in saline lakes of highlands of western and southern South America, from Peru, Bolivia, Paraguay, and Uruguay south through Chile and Argentina, casually north to central California, Utah, central New Mexico, southern Texas, southwestern Louisiana, and Florida (Colwell and Jehl 1994, AOU 1998).
    Global Range Code
    H
    Global Range Description
    >2,500,000 square km (greater than 1,000,000 square miles)
    ELEMENT_GLOBAL.2.105425