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California gull

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288: 31: 339: 495: 86: 250: 61: 389:. Opportunistic feeders, they also scavenge at garbage dumps, marinas and docks. They frequently beg for food at public beaches, parks and other locations where people will hand feed them. They have been known to steal food directly from people at picnics and outdoor restaurants. They may follow fishing boats or plows in fields for insects stirred up by this activity. 329:
Adults are similar in appearance to the herring gull, but with brown eyes, yellow legs, and a more rounded head. The body is mainly white with grey back and upper wings. The bill is yellow with a black ring and red spot near the tip. They have black primaries with white tips. Immature birds are also
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area. The South Bay California gull population has grown from less than 1,000 breeding birds in 1982 to over 33,000 in 2006. This population boom has resulted in large resident flocks of gulls that will opportunistically prey on other species, particularly the eggs and nestlings of other birds.
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similar in appearance to immature herring gulls, with browner plumage than immature ring-billed gulls. Length can range from 46 to 55 cm (18 to 22 in), the wingspan 122–137 cm (48–54 in) and body mass can vary from 430 to 1,045 g (0.948 to 2.304 lb).
527:, where it did not historically breed, and has undergone exponential population growth. These California gulls now inhabit large, remote salt-production ponds and levees and have a very large food source provided by nearby landfills from 366:. They nest in colonies, sometimes with other birds. The nest is a shallow depression on the ground lined with vegetation and feathers. The female usually lays 2 or 3 eggs. Both parents take turns feeding their chicks. 568:, are also preyed upon by the abnormally large flocks of California gulls. Efforts are underway to reduce habitat for this species and find other ways to disperse the large numbers of gulls. 506:, taken by William L. Finley and Herman Bohlman during a 1908 photograph trip to the area. Finley's and Bohlman's photographs would later help Malheur become a bird refuge in 1908. 1935: 1915: 385:
These birds forage in flight or pick up objects while swimming, walking or wading. They mainly eat insects, fish and the eggs and young of other birds, especially
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California Gull distribution, abundance, and predation on waterbird eggs and chicks in South San Francisco Bay
1920: 1589: 1580: 1781: 585: 981:. Final Report, U. S. Geological Survey, Western Ecological and Research Center, Davis and Vallejo, CA. 634: 1859: 1605: 528: 487:
variation, they breed true and the low genetic divergence can be explained by separation during the
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coast in winter. It is only then that this bird is regularly found in western California.
8: 1507: 1387: 1382: 1037: 656: 611: 445: 50: 978: 523:. However, in recent decades this species has begun to breed in the southern portion of 1392: 1347: 1301: 1266: 1194: 1162: 1117: 960: 916: 868: 553: 80: 1004: 1815: 1636: 1377: 1372: 1367: 1352: 1261: 1224: 1214: 1127: 1112: 1102: 811: 708: 684: 561: 524: 1872: 1641: 1489: 1357: 1177: 1132: 1057: 994:
Patuxent Bird Identification InfoCenter: California gull information and pictures.
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California gulls are also known to eat various vegetables and fruits, particularly
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Ackerman, J. T., J. Y. Takekawa, C. Strong, N. Athearn, and A. Rex. (2006)
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due to declining numbers at their historic California breeding colony at
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In California, the California gull at one time held the protected status
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Hand-painted glass slide of a colony of California gulls at
480:. Although these subspecies are not well distinguishable by 1053: 603: 413: 306: 127: 810:. Reno, NV, USA: University of Nevada Press. p. 203. 491:
and renewed contact in Montana during more recent times.
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Vega gull (or East Siberian gull / Mongolian gull)
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Jehl, Joseph R. Jr.; Francine, J; Bond, S. I. (1990).
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Karl, S. A.; Zink, R. M.; Jehl, Joseph R. Jr. (1987).
609: 396:. As a result, in some areas it may be regarded as a 1936:
Natural history of the Channel Islands of California
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Native birds of the West Coast of the United States
683:by John B. Dunning Jr. (Editor). CRC Press (1992), 635:10.2305/IUCN.UK.2018-2.RLTS.T22694321A132542511.en 464:with a more northerly distribution, ranging from 1887: 933: 1079:(† indicates a species confirmed to be extinct) 540:Seriously threatened birds that share the same 535:and other urban areas, all the way up into the 1911:Native birds of the Northwestern United States 1038: 885: 729:"Food Habits of the California Gull in Utah" 1052: 888:"Allozyme analysis of the California Gull ( 333: 1257:Great black-headed gull (or Pallas's gull) 1045: 1031: 726: 248: 59: 29: 633: 552:, while less-threatened birds, including 444:There are two subspecies recognized, the 1956:Least concern biota of the United States 971: 927: 831: 699: 697: 493: 337: 286: 38:California gull at Palo Alto Duck Pond, 799: 797: 510: 432:commemorates this event, known as the " 1888: 1358:Grey-headed gull (or grey-hooded gull) 768: 1946:Taxa named by George Newbold Lawrence 1906:Native birds of the Canadian Prairies 1541: 1540: 1026: 803: 694: 517:California Species of Special Concern 420:settlers in dealing with a plague of 1961:Least concern biota of North America 879: 837: 794: 751:"Larus californicus California gull" 722: 720: 346:Their breeding habitat is lakes and 1931:Fauna of the San Francisco Bay Area 1896:IUCN Red List least concern species 621:IUCN Red List of Threatened Species 586:"Duck Pond, Palo Alto Yacht Harbor" 13: 1926:Fauna of the Western United States 743: 674: 14: 1972: 988: 717: 681:CRC Handbook of Avian Body Masses 460:, and the slightly larger, paler 313:, but larger on average than the 590:Palo Alto Historical Association 84: 1005:California Gull Species Account 739:(5): 302–308 – via JSTOR. 727:Greenhalgh, Clifton M. (1952). 610:BirdLife International (2018). 649: 578: 324: 309:, smaller on average than the 291:California gull, in California 1: 1007:at Cornell Lab of Ornithology 707:. Alfred A. Knopf, New York. 571: 439: 403: 257:Range of the California gull 838:Jehl, Joseph R. Jr. (1987). 703:Sibley, David Allen (2000): 240:Great Plains California gull 7: 416:, remembered for assisting 380: 225:Great Basin California gull 10: 1977: 998:December 16, 2018, at the 778:. Utah.gov. Archived from 373:, with most moving to the 358:, Canada south to eastern 342:Winter plumage, California 1549: 1516: 1498: 1480: 1462: 1437: 1419: 1401: 1320: 1280: 1235: 1086: 1065: 705:The Sibley Guide to Birds 628:: e.T22694321A132542511. 256: 247: 209: 204: 186: 179: 81:Scientific classification 79: 57: 48: 37: 28: 23: 1220:Lesser black-backed gull 1148:Kelp gull (or Cape gull) 807:Birds of the Great Basin 334:Distribution and habitat 40:Baylands Nature Preserve 1941:Birds described in 1854 1143:Great black-backed gull 804:Ryser, Fred A. (1985). 1526:Hybridisation in gulls 1449:Black-legged kittiwake 507: 343: 292: 44:Palo Alto, California 1829:Paleobiology Database 1190:American herring gull 1185:European herring gull 913:10.1093/auk/104.4.767 550:California least tern 497: 356:Northwest Territories 341: 290: 1454:Red-legged kittiwake 1153:Glaucous-winged gull 1015:Animal Diversity Web 755:Animal Diversity Web 544:habitat include the 511:Status in California 434:Miracle of the Gulls 350:in interior western 305:) is a medium-sized 172:L. californicus 1921:Fauna of California 1508:Swallow-tailed gull 1383:Slender-billed gull 554:black-necked stilts 51:Conservation status 1873:Larus-californicus 1581:Larus californicus 1551:Larus californicus 1267:Mediterranean gull 1195:Yellow-legged gull 1163:Yellow-footed gull 890:Larus californicus 842:Larus californicus 614:Larus californicus 508: 462:L. c. albertaensis 344: 302:Larus californicus 293: 230:L. c. albertaensis 213:L. c. californicus 190:Larus californicus 1883: 1882: 1816:Open Tree of Life 1543:Taxon identifiers 1534: 1533: 1521:Gull eggs as food 1378:Black-headed gull 1373:Brown-headed gull 1368:Black-billed gull 1353:Brown-hooded gull 1215:Slaty-backed gull 1128:Short-billed gull 1113:Black-tailed gull 776:"Utah State Bird" 689:978-0-8493-4258-5 657:"Gulls (Laridae)" 525:San Francisco Bay 285: 284: 280: Nonbreeding 241: 237: 226: 222: 74: 1968: 1876: 1875: 1863: 1862: 1850: 1849: 1837: 1836: 1824: 1823: 1811: 1810: 1798: 1797: 1785: 1784: 1772: 1771: 1759: 1758: 1746: 1745: 1733: 1732: 1720: 1719: 1707: 1706: 1694: 1693: 1684: 1683: 1671: 1670: 1658: 1657: 1645: 1644: 1632: 1631: 1622: 1621: 1609: 1608: 1606:7FCE8A431E5E5ECB 1596: 1595: 1585: 1584: 1583: 1570: 1569: 1568: 1538: 1537: 1388:Bonaparte's gull 1133:Ring-billed gull 1047: 1040: 1033: 1024: 1023: 982: 975: 969: 968: 940: 931: 925: 924: 896: 883: 877: 876: 848: 835: 829: 828: 826: 824: 801: 792: 791: 789: 787: 772: 766: 765: 763: 761: 747: 741: 740: 724: 715: 701: 692: 678: 672: 671: 669: 667: 653: 647: 646: 644: 642: 637: 607: 601: 600: 598: 596: 582: 558:American avocets 466:Great Slave Lake 315:ring-billed gull 279: 274: Year-round 273: 267: 261: 252: 239: 235: 232: 224: 220: 215: 192: 89: 88: 68: 63: 62: 33: 24:California gull 21: 20: 1976: 1975: 1971: 1970: 1969: 1967: 1966: 1965: 1951:Symbols of Utah 1886: 1885: 1884: 1879: 1871: 1866: 1858: 1853: 1845: 1840: 1832: 1827: 1819: 1814: 1806: 1801: 1793: 1790:Observation.org 1788: 1780: 1775: 1767: 1762: 1754: 1749: 1741: 1736: 1728: 1723: 1715: 1710: 1702: 1697: 1691:california-gull 1689: 1687: 1679: 1674: 1666: 1661: 1653: 1648: 1640: 1635: 1627: 1625: 1617: 1612: 1604: 1599: 1593: 1588: 1579: 1578: 1573: 1564: 1563: 1558: 1545: 1535: 1530: 1512: 1494: 1476: 1458: 1433: 1415: 1397: 1393:Saunders's gull 1348:Hartlaub's gull 1337:Red-billed gull 1323:Chroicocephalus 1316: 1302:Franklin's gull 1276: 1247:White-eyed gull 1231: 1138:California gull 1118:Heermann's gull 1082: 1061: 1051: 1020: 1011:California Gull 1000:Wayback Machine 991: 986: 985: 976: 972: 957:10.2307/1368692 938: 932: 928: 894: 884: 880: 865:10.2307/4087540 846: 836: 832: 822: 820: 818: 802: 795: 785: 783: 774: 773: 769: 759: 757: 749: 748: 744: 725: 718: 702: 695: 679: 675: 665: 663: 661:The World Birds 655: 654: 650: 640: 638: 608: 604: 594: 592: 584: 583: 579: 574: 562:Forster's terns 513: 442: 422:Mormon crickets 406: 383: 336: 327: 297:California gull 281: 277: 275: 271: 269: 268: Migration 265: 263: 259: 238: 233: 223: 216: 200: 194: 188: 175: 138:Charadriiformes 83: 75: 64: 60: 53: 43: 17: 16:Species of bird 12: 11: 5: 1974: 1964: 1963: 1958: 1953: 1948: 1943: 1938: 1933: 1928: 1923: 1918: 1913: 1908: 1903: 1898: 1881: 1880: 1878: 1877: 1864: 1851: 1838: 1825: 1812: 1799: 1786: 1773: 1760: 1747: 1734: 1721: 1708: 1695: 1685: 1672: 1659: 1646: 1633: 1623: 1610: 1597: 1586: 1571: 1555: 1553: 1547: 1546: 1532: 1531: 1529: 1528: 1523: 1517: 1514: 1513: 1511: 1510: 1504: 1502: 1496: 1495: 1493: 1492: 1486: 1484: 1478: 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282: 276: 270: 264: 262: Breeding 258: 254: 253: 245: 244: 243: 242: 227: 207: 206: 202: 201: 195: 184: 183: 177: 176: 169: 167: 163: 162: 155: 151: 150: 145: 141: 140: 135: 131: 130: 125: 121: 120: 115: 111: 110: 105: 101: 100: 95: 91: 90: 77: 76: 58: 55: 54: 49: 46: 45: 35: 34: 26: 25: 15: 9: 6: 4: 3: 2: 1973: 1962: 1959: 1957: 1954: 1952: 1949: 1947: 1944: 1942: 1939: 1937: 1934: 1932: 1929: 1927: 1924: 1922: 1919: 1917: 1914: 1912: 1909: 1907: 1904: 1902: 1899: 1897: 1894: 1893: 1891: 1874: 1869: 1865: 1861: 1856: 1852: 1848: 1843: 1839: 1835: 1830: 1826: 1822: 1817: 1813: 1809: 1804: 1800: 1796: 1791: 1787: 1783: 1778: 1774: 1770: 1765: 1761: 1757: 1752: 1748: 1744: 1739: 1735: 1731: 1726: 1722: 1718: 1713: 1709: 1705: 1700: 1696: 1692: 1686: 1682: 1677: 1673: 1669: 1664: 1660: 1656: 1651: 1647: 1643: 1638: 1634: 1630: 1624: 1620: 1615: 1611: 1607: 1602: 1598: 1591: 1587: 1582: 1576: 1572: 1567: 1561: 1557: 1556: 1554: 1552: 1548: 1544: 1539: 1527: 1524: 1522: 1519: 1518: 1515: 1509: 1506: 1505: 1503: 1501: 1497: 1491: 1490:Sabine's gull 1488: 1487: 1485: 1483: 1479: 1473: 1470: 1469: 1467: 1465: 1461: 1455: 1452: 1450: 1447: 1446: 1444: 1442: 1441: 1436: 1430: 1427: 1426: 1424: 1422: 1418: 1412: 1409: 1408: 1406: 1404: 1400: 1394: 1391: 1389: 1386: 1384: 1381: 1379: 1376: 1374: 1371: 1369: 1366: 1364: 1361: 1359: 1356: 1354: 1351: 1349: 1346: 1343: 1340: 1338: 1335: 1333: 1330: 1329: 1327: 1325: 1324: 1319: 1313: 1310: 1308: 1305: 1303: 1300: 1298: 1297:Laughing gull 1295: 1293: 1290: 1289: 1287: 1285: 1284: 1279: 1273: 1270: 1268: 1265: 1263: 1260: 1258: 1255: 1253: 1250: 1248: 1245: 1244: 1242: 1240: 1239: 1234: 1226: 1223: 1222: 1221: 1218: 1216: 1213: 1211: 1210:Armenian gull 1208: 1206: 1203: 1201: 1198: 1196: 1193: 1191: 1188: 1186: 1183: 1179: 1178:Thayer's gull 1176: 1175: 1174: 1171: 1169: 1168:Glaucous gull 1166: 1164: 1161: 1159: 1156: 1154: 1151: 1149: 1146: 1144: 1141: 1139: 1136: 1134: 1131: 1129: 1126: 1124: 1121: 1119: 1116: 1114: 1111: 1109: 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289: 255: 251: 246: 231: 228: 219: 214: 211: 210: 208: 203: 198: 193: 191: 185: 182: 181:Binomial name 178: 174: 173: 168: 165: 164: 161: 160: 156: 153: 152: 149: 146: 143: 142: 139: 136: 133: 132: 129: 126: 123: 122: 119: 116: 113: 112: 109: 106: 103: 102: 99: 96: 93: 92: 87: 82: 78: 72: 67: 66:Least Concern 56: 52: 47: 41: 36: 32: 27: 22: 19: 1550: 1499: 1481: 1463: 1438: 1421:Rhodostethia 1420: 1403:Hydrocoloeus 1402: 1342:Huahine gull 1321: 1292:Dolphin gull 1281: 1236: 1200:Caspian gull 1173:Iceland gull 1158:Western gull 1137: 1108:Olrog's gull 1098:Pacific gull 1087: 1074: 1019: 1014: 973: 948: 942: 929: 904: 898: 889: 881: 856: 850: 841: 833: 821:. Retrieved 806: 784:. Retrieved 780:the original 770: 758:. Retrieved 754: 745: 736: 732: 704: 680: 676: 664:. Retrieved 660: 651: 639:. Retrieved 625: 619: 613: 605: 593:. Retrieved 589: 580: 546:snowy plover 514: 500:Malheur Lake 478:South Dakota 470:Great Plains 461: 443: 408:This is the 407: 391: 384: 368: 345: 328: 311:herring gull 301: 300: 296: 294: 229: 212: 189: 187: 171: 170: 158: 18: 1842:SeaLifeBase 1777:Neotropical 1751:NatureServe 1699:iNaturalist 1575:Wikispecies 1429:Ross's gull 1411:Little gull 1363:Andean gull 1332:Silver gull 1283:Leucophaeus 1272:Relict gull 1238:Ichthyaetus 1123:Common gull 641:14 November 489:Pleistocene 472:of western 452:to central 450:Great Basin 325:Description 236:, 1987 221:, 1854 205:Subspecies 1890:Categories 1868:Xeno-canto 1472:Ivory gull 1252:Sooty gull 1060:: Laridae) 760:13 October 733:The Condor 572:References 537:Sacramento 440:Subspecies 410:state bird 404:State bird 360:California 319:California 1464:Pagophila 1312:Grey gull 1307:Lava gull 823:11 August 786:11 August 542:South Bay 521:Mono Lake 468:onto the 448:from the 398:crop pest 387:ducklings 371:migratory 369:They are 354:from the 166:Species: 104:Kingdom: 98:Eukaryota 1756:2.100812 1743:22694321 1717:10886057 1619:22694321 1614:BirdLife 1560:Wikidata 1500:Creagrus 996:Archived 666:10 March 595:10 March 533:San Jose 485:allozyme 474:Manitoba 446:nominate 426:monument 394:cherries 381:Behavior 364:Colorado 218:Lawrence 197:Lawrence 144:Family: 118:Chordata 114:Phylum: 108:Animalia 94:Domain: 71:IUCN 3.1 1681:2481146 1601:Avibase 1566:Q953999 1076:Species 965:1368692 921:4087291 873:4087540 458:Wyoming 454:Montana 375:Pacific 348:marshes 154:Genus: 148:Laridae 134:Order: 124:Class: 69: ( 1860:343907 1834:335306 1821:119602 1808:343907 1782:calgul 1769:126681 1730:176829 1688:GNAB: 1663:EURING 1655:calgul 1629:calgul 1594:calgul 1058:family 963:  944:Condor 919:  871:  814:  711:  687:  564:, and 504:Oregon 418:Mormon 278:  272:  266:  260:  199:, 1854 1901:Larus 1855:WoRMS 1847:75064 1795:73051 1712:IRMNG 1650:eBird 1642:3SBPY 1626:BOW: 1440:Rissa 1089:Larus 1067:Genus 1054:Gulls 961:JSTOR 939:(PDF) 917:JSTOR 895:(PDF) 869:JSTOR 847:(PDF) 482:mtDNA 159:Larus 1803:OBIS 1764:NCBI 1738:IUCN 1725:ITIS 1704:4385 1676:GBIF 1668:5930 1482:Xema 825:2014 812:ISBN 788:2014 762:2021 709:ISBN 685:ISBN 668:2022 643:2021 626:2018 597:2022 548:and 476:and 456:and 424:. A 414:Utah 362:and 307:gull 295:The 234:Jehl 128:Aves 1637:CoL 1590:ABA 1013:at 953:doi 909:doi 905:104 900:Auk 861:doi 857:104 852:Auk 630:doi 436:". 428:in 412:of 1892:: 1870:: 1857:: 1844:: 1831:: 1818:: 1805:: 1792:: 1779:: 1766:: 1753:: 1740:: 1727:: 1714:: 1701:: 1678:: 1665:: 1652:: 1639:: 1616:: 1603:: 1592:: 1577:: 1562:: 959:. 949:92 947:. 941:. 915:. 903:. 897:. 892:)" 867:. 855:. 849:. 844:)" 796:^ 753:. 737:54 735:. 731:. 719:^ 696:^ 659:. 624:. 618:. 588:. 560:, 556:, 531:, 502:, 400:. 42:, 1344:† 1056:( 1046:e 1039:t 1032:v 967:. 955:: 923:. 911:: 875:. 863:: 827:. 790:. 764:. 691:. 670:. 645:. 632:: 616:" 612:" 599:. 299:( 73:)

Index


Baylands Nature Preserve
Conservation status
Least Concern
IUCN 3.1
Scientific classification
Edit this classification
Eukaryota
Animalia
Chordata
Aves
Charadriiformes
Laridae
Larus
Binomial name
Lawrence
Lawrence


gull
herring gull
ring-billed gull
California

marshes
North America
Northwest Territories
California
Colorado
migratory

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