Knowledge (XXG)

Cassin's auklet

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could be related to the unusual North Pacific warmth which is pushing marine food chains and could affect other species of zooplankton, krill and fish that normally develop in cold waters and the birds that consume them including Cassin's auklets. The event happened in the late summer when the auklet
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Cassin's auklet nests in burrows on small islands, and in the southern area of its range may be found in the breeding colony year round. It either digs holes in the soil or uses natural cracks and crevices to nest in, also readily using man-made structures. Pairs will show a strong loyalty towards
430:. Numbers at sea may be grossly underestimated because the bird moves away from ships at a distance of more than a kilometer. Recently their distribution around Triangle Island has been determined by telemetry. It feeds by diving underwater beating its wings for propulsion, hunting down large 482:
estimated a toll between 50,000 and 100,000 deaths that year. Scientists were uncertain about the cause of these deaths. While viruses, bacteria, and oil spills were ruled out the cause appeared to be starvation. Scientists found little evidence of food in the stomachs of the carcasses. Some
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Most individuals in a cohort begin breeding at age 3 (27%), and by 8 years >95% of a given cohort has recruited. Mean age of recruitment is 3.6 years. Minimum annual breeding propensity is 0.83, apparent local survival is 0.76, juvenile survival (ages 0 to 2) is 0.15.
860: 394:. They also depart from the colony before dawn. The egg is incubated for 40 days, the small chick is then fed nightly for 35 days by both parents, who regurgitate partially digested food (euphausiids and other small crustaceans) carried in a special 470:. Annual variation in ocean climate synchronously affects multiple demographic parameters including survival, breeding propensity, breeding success, and recruitment, a situation conducive to rapid population declines due to climate change. 406:
alone and makes its way to the sea. Cassin's auklet is unusual amongst seabirds in occasionally laying a second clutch after a successful first clutch (it is the only northern hemisphere seabird to do so).
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is generally dark above and pale below, with a small white mark above the eye. Its bill is overall dark with a pale spot, and its feet are blue. Unlike many other auks, Cassin's auklet lacks dramatic
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In the last few months of 2014, the carcasses of thousands of Cassin's auklets washed ashore from Northern California up to the north coast of Washington State. The
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Lee, Derek E.; Warzybok, Peter M.; Bradley, Russell W. (2012). "Recruitment of Cassin's Auklet (Ptychoramphus aleuticus): Individual Age and Parental Age Effects".
301:, where the population is estimated to be around 55,0000 pairs. It is not known to be migratory. However, northern birds may move farther south during the winter. 3259: 3086: 1627: 888: 747: 3231: 2998: 3274: 3047: 676:"Climate and demography of the planktivorous Cassin's auklet Ptychoramphus aleuticus off northern California: implications for population change" 3269: 266:
plumage, remaining the same over most of the year. At sea it is usually identified by its flight, which is described as looking like a flying
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the single white egg, returning to swap shifts at night (usually after 2300 h) to avoid being taken by predators such as the
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Boyd, W. S.; MacFarlane Tranquilla, L.; Ryder, J. L.; Shisko, S. G.; Bertram, D. F. (2008).
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Cassin's auklet is listed as Near Threatened, and some populations (principally the
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population) have suffered steep declines. Threats to the auklet include
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Cassin's auklet is a small (25 cm, 200 g) nondescript auk. Its
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scientists from the California's Farallon Institute believe these
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each other and to a nesting site for many years. Both the parents
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Manuwal, D. A. and A. C. Thoresen. 1993. Cassin's Auklet (
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At sea Cassin's auklets feeds offshore, in clear often
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L. H. Miller et Bowman, 1958, is known from the Late
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Bird carcasses along Pacific shore baffle biologists
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It is the only species placed in the genus 8: 357:An extinct relative or predecessor species, 480:Coastal Observation and Seabird Survey Team 398:, often referred to in the literature as a 2834: 2375: 2240: 2123: 2066: 2057: 2044: 1653: 1640: 1387: 1238: 1225: 964: 951: 889: 875: 867: 273:Cassin's auklet ranges from midway up the 202: 48: 29: 20: 815: 699: 646: 528: 662:CASSIN’S AUKLET Ptychoramphus aleuticus 497: 857:from tsuru-bird.net by Monte M. Taylor 3260:IUCN Red List near threatened species 664:by the US Fish & Wildlife Service 566:. International Ornithologists' Union 454:carnivores (particularly in Alaska), 7: 738: 736: 585: 583: 581: 639:IUCN Red List of Threatened Species 516:IUCN Red List of Threatened Species 14: 468:Migratory Bird Treaty Act of 1918 2817: 2030: 1626: 840:The Birds of North America, No. 701:10.1111/j.1365-2656.2007.01198.x 564:IOC World Bird List Version 12.2 73: 505:BirdLife International (2020). 3275:Native birds of Western Canada 418:water, often associating with 247:it is one of the better known 1: 3270:Birds of the Aleutian Islands 861:Cassin's auklet photo gallery 474:2014 summer mass death in US 3306: 817:10.1525/auk.2008.125.1.158 225:that ranges widely in the 3290:Taxa named by John Cassin 2814: 2378: 2069: 2056: 2043: 2028: 1652: 1639: 1624: 1237: 1224: 963: 950: 906: 680:Journal of Animal Ecology 523:: e.T22694903A180893939. 275:Baja California peninsula 201: 182: 175: 70:Scientific classification 68: 46: 37: 28: 23: 901:and their extinct allies 488:chicks began to fledge. 3285:Birds described in 1811 3196:Ptychoramphus-aleuticus 2878:Ptychoramphus aleuticus 2848:Ptychoramphus aleuticus 834:Ptychoramphus aleuticus 509:Ptychoramphus aleuticus 460:sea surface temperature 218:Ptychoramphus aleuticus 186:Ptychoramphus aleuticus 3280:Native birds of Alaska 855:Cassin's auklet images 798:Ptychoramhus aleuticus 604:10.1525/auk.2012.10224 558:, eds. (August 2022). 3152:Paleobiology Database 3139:Paleobiology Database 221:) is a small, chunky 359:Ptychoramphus tenuis 24:Cassin's auklet 750:on January 26, 2015 692:2007JAnEc..76..337L 367:San Diego Formation 40:Conservation status 2172:Synthliboramphini 554:; Donsker, David; 424:underwater canyons 422:landmarks such as 3247: 3246: 3126:Open Tree of Life 2840:Taxon identifiers 2831: 2830: 2827: 2826: 2812: 2811: 2492: 2491: 2345: 2344: 2297: 2296: 2230: 2229: 2039: 2038: 2026: 2025: 1635: 1634: 1622: 1621: 1534: 1533: 1220: 1219: 1216: 1215: 728:Los Angeles Times 556:Rasmussen, Pamela 348: 322: 210: 209: 168:P. aleuticus 157: 63: 3297: 3240: 3239: 3227: 3226: 3225: 3199: 3198: 3186: 3185: 3173: 3172: 3160: 3159: 3147: 3146: 3134: 3133: 3121: 3120: 3108: 3107: 3095: 3094: 3082: 3081: 3069: 3068: 3056: 3055: 3043: 3042: 3030: 3029: 3017: 3016: 3007: 3006: 2994: 2993: 2981: 2980: 2968: 2967: 2955: 2954: 2942: 2941: 2932: 2931: 2919: 2918: 2906: 2905: 2903:2CF6D6F60FAD0DE9 2893: 2892: 2882: 2881: 2880: 2867: 2866: 2865: 2835: 2822: 2821: 2793: 2775: 2765: 2701: 2663: 2632: 2621: 2590: 2545: 2535: 2424: 2414: 2404: 2394: 2384: 2376: 2304: 2241: 2181:Synthliboramphus 2151: 2124: 2105: 2095: 2088:Hydrotherikornis 2085: 2075: 2067: 2058: 2045: 2034: 1980: 1942: 1932: 1922: 1905: 1867: 1775: 1752: 1728: 1677: 1667: 1654: 1641: 1630: 1563: 1540:Recurvirostridae 1487: 1470: 1433: 1401: 1388: 1349: 1339: 1289: 1252: 1239: 1226: 1113: 1089: 1073: 1063: 1053: 1042: 1032: 1020: 1010: 999: 988: 981:Charadriisimilis 978: 965: 952: 891: 884: 877: 868: 829: 819: 781: 780: 778: 776: 766: 760: 759: 757: 755: 746:. Archived from 740: 731: 720: 714: 713: 703: 671: 665: 659: 653: 652: 650: 630: 624: 623: 587: 576: 575: 573: 571: 548: 542: 541: 539: 537: 532: 502: 448:Farallon Islands 400:sublingual pouch 392:peregrine falcon 347:van Rossem, 1939 346: 325:Aleutian Islands 316: 308:are recognised: 295:Vancouver Island 283:Aleutian Islands 241:British Columbia 206: 188: 152: 78: 77: 57: 52: 51: 33: 21: 3305: 3304: 3300: 3299: 3298: 3296: 3295: 3294: 3250: 3249: 3248: 3243: 3235: 3230: 3221: 3220: 3215: 3202: 3194: 3189: 3181: 3176: 3168: 3163: 3155: 3150: 3142: 3137: 3129: 3124: 3116: 3111: 3103: 3098: 3090: 3085: 3077: 3072: 3064: 3059: 3051: 3046: 3038: 3033: 3025: 3020: 3012: 3010: 3002: 2997: 2989: 2984: 2976: 2971: 2963: 2958: 2950: 2945: 2937: 2935: 2927: 2922: 2914: 2909: 2901: 2896: 2890: 2885: 2876: 2875: 2870: 2861: 2860: 2855: 2842: 2832: 2823: 2816: 2808: 2750: 2730: 2521:Chroicocephalus 2488: 2461: 2434: 2365: 2341: 2293: 2266: 2226: 2206: 2186: 2166: 2113: 2052: 2035: 2022: 1995: 1817: 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2261:Ptychoramphus 2258: 2256: 2255: 2251: 2250: 2248: 2246: 2242: 2239: 2237: 2236:Fraterculinae 2233: 2223: 2222: 2221:Brachyramphus 2218: 2217: 2215: 2213: 2209: 2203: 2202: 2198: 2197: 2195: 2193: 2189: 2183: 2182: 2178: 2177: 2175: 2173: 2169: 2163: 2162: 2158: 2156: 2155: 2148: 2146: 2145: 2141: 2139: 2138: 2134: 2133: 2131: 2129: 2125: 2122: 2120: 2116: 2110: 2109: 2108:Pseudocepphus 2102: 2100: 2099: 2092: 2090: 2089: 2082: 2080: 2079: 2072: 2071: 2068: 2065: 2063: 2059: 2055: 2051: 2046: 2042: 2033: 2019: 2018: 2014: 2012: 2011: 2007: 2006: 2004: 2002: 1998: 1992: 1991: 1987: 1985: 1984: 1977: 1975: 1974: 1970: 1968: 1967: 1963: 1961: 1960: 1956: 1954: 1953: 1949: 1947: 1946: 1939: 1937: 1936: 1929: 1927: 1926: 1919: 1917: 1916: 1912: 1910: 1909: 1902: 1900: 1899: 1895: 1893: 1892: 1888: 1886: 1885: 1881: 1879: 1878: 1874: 1872: 1871: 1864: 1862: 1861: 1857: 1855: 1854: 1850: 1848: 1847: 1843: 1841: 1840: 1836: 1834: 1833: 1829: 1828: 1826: 1824: 1820: 1814: 1813: 1809: 1807: 1806: 1802: 1801: 1799: 1797: 1796:Rostratulidae 1793: 1787: 1786: 1782: 1780: 1779: 1772: 1771: 1769: 1767: 1763: 1757: 1756: 1749: 1747: 1746: 1742: 1740: 1739: 1735: 1733: 1732: 1725: 1723: 1722: 1718: 1716: 1715: 1711: 1709: 1708: 1704: 1702: 1701: 1700:Actophilornis 1697: 1696: 1694: 1692: 1688: 1682: 1681: 1674: 1672: 1671: 1664: 1663: 1661: 1659: 1655: 1651: 1647: 1642: 1638: 1629: 1615: 1614: 1610: 1609: 1607: 1605: 1601: 1595: 1594: 1590: 1589: 1587: 1585: 1581: 1575: 1574: 1573:Recurvirostra 1570: 1568: 1567: 1560: 1558: 1557: 1553: 1551: 1550: 1549:Cladorhynchus 1546: 1545: 1543: 1541: 1537: 1527: 1526: 1522: 1520: 1519: 1515: 1513: 1512: 1508: 1506: 1505: 1501: 1499: 1498: 1494: 1492: 1491: 1484: 1482: 1481: 1477: 1475: 1474: 1467: 1465: 1464: 1460: 1458: 1457: 1453: 1452: 1450: 1448: 1444: 1438: 1437: 1430: 1428: 1427: 1423: 1421: 1420: 1419:Hoploxypterus 1416: 1414: 1413: 1409: 1406: 1405: 1398: 1397: 1395: 1393: 1389: 1386: 1384: 1380: 1374: 1373: 1369: 1368: 1366: 1364: 1360: 1354: 1353: 1346: 1344: 1343: 1336: 1334: 1333: 1329: 1328: 1326: 1324: 1320: 1314: 1313: 1309: 1308: 1306: 1304: 1300: 1294: 1293: 1286: 1284: 1283: 1279: 1277: 1276: 1272: 1271: 1269: 1267: 1263: 1257: 1256: 1249: 1248: 1246: 1244: 1240: 1236: 1232: 1227: 1223: 1206: 1205: 1204: 1203: 1201: 1199: 1195: 1186: 1185: 1184: 1183: 1181: 1179: 1175: 1166: 1165: 1164: 1163: 1161: 1159: 1155: 1148: 1147: 1143: 1141: 1140: 1136: 1134: 1133: 1129: 1127: 1126: 1122: 1121: 1119: 1116: 1109: 1103: 1102: 1098: 1097: 1095: 1092: 1085: 1078: 1077: 1070: 1068: 1067: 1060: 1058: 1057: 1050: 1047: 1046: 1039: 1037: 1036: 1029: 1026: 1025: 1017: 1015: 1014: 1007: 1004: 1003: 1002:Fluviatitavis 996: 993: 992: 985: 983: 982: 975: 974: 972: 970: 966: 962: 958: 953: 949: 943: 939: 937: 933: 931: 927: 925: 921: 919: 915: 913: 909: 908: 905: 900: 892: 887: 885: 880: 878: 873: 872: 869: 862: 859: 856: 853: 852: 848: 843: 839: 835: 831: 827: 823: 818: 813: 809: 805: 801: 799: 792: 791: 787: 771: 765: 762: 749: 745: 739: 737: 733: 730: 729: 724: 719: 716: 711: 707: 702: 697: 693: 689: 685: 681: 677: 670: 667: 663: 658: 655: 649: 644: 640: 636: 633:IUCN (2016). 629: 626: 621: 617: 613: 609: 605: 601: 597: 593: 586: 584: 582: 578: 565: 561: 557: 553: 547: 544: 531: 526: 522: 518: 517: 512: 510: 501: 498: 491: 489: 486: 481: 473: 471: 469: 465: 461: 457: 453: 449: 441: 439: 437: 434:, especially 433: 429: 425: 421: 417: 412: 408: 405: 401: 397: 393: 389: 385: 376: 374: 372: 368: 364: 360: 352: 344: 341: 338: 334: 330: 326: 320: 314: 311: 310: 309: 307: 302: 300: 296: 292: 288: 287:North America 284: 280: 276: 271: 269: 265: 261: 256: 254: 250: 246: 242: 238: 234: 233: 232:Ptychoramphus 228: 227:North Pacific 224: 220: 219: 214: 205: 200: 195: 189: 187: 181: 178: 177:Binomial name 174: 170: 169: 164: 161: 160: 155: 150: 149: 148:Ptychoramphus 145: 142: 141: 138: 135: 132: 131: 128: 125: 122: 121: 118: 115: 112: 111: 108: 105: 102: 101: 98: 95: 92: 91: 88: 85: 82: 81: 76: 71: 67: 61: 56: 45: 41: 36: 32: 27: 22: 19: 3207: 2847: 2801: 2794: 2784: 2776: 2766: 2745:Stercorarius 2743: 2723: 2716: 2709: 2702: 2692: 2685: 2678: 2673:Rhodostethia 2671: 2666:Pseudosterna 2664: 2654: 2647: 2640: 2633: 2622: 2612: 2605: 2598: 2591: 2581: 2574: 2569:Hydrocoloeus 2567: 2560: 2555:Gelochelidon 2553: 2546: 2536: 2526: 2519: 2512: 2505: 2481: 2474: 2454: 2447: 2426: 2417:Paractiornis 2415: 2405: 2395: 2385: 2358: 2336:Praemancalla 2334: 2327: 2320: 2313: 2286: 2279: 2272:Fraterculini 2259: 2252: 2219: 2199: 2179: 2159: 2152: 2142: 2135: 2106: 2096: 2086: 2076: 2015: 2008: 2001:Thinocoridae 1988: 1981: 1971: 1964: 1957: 1950: 1943: 1933: 1923: 1913: 1906: 1896: 1889: 1884:Limnocryptes 1882: 1875: 1868: 1860:Coenocorypha 1858: 1851: 1844: 1837: 1830: 1823:Scolopacidae 1810: 1805:Nycticryphes 1803: 1783: 1776: 1766:Pedionomidae 1755:Nupharanassa 1753: 1743: 1736: 1729: 1719: 1712: 1705: 1698: 1678: 1668: 1657: 1611: 1593:Ibidorhyncha 1591: 1571: 1564: 1554: 1547: 1523: 1516: 1509: 1502: 1495: 1488: 1478: 1471: 1461: 1454: 1447:Charadriinae 1434: 1424: 1417: 1412:Erythrogonys 1410: 1404:Dolicopterus 1402: 1370: 1350: 1340: 1330: 1312:Pluvianellus 1310: 1290: 1280: 1273: 1253: 1242: 1144: 1139:Palaeotringa 1137: 1130: 1123: 1115:Graculavidae 1099: 1091:Laornithidae 1074: 1064: 1054: 1043: 1033: 1022: 1011: 1000: 989: 979: 968: 928:Infraclass: 841: 837: 833: 807: 803: 797: 773:. Retrieved 764: 752:. Retrieved 748:the original 726: 718: 683: 679: 669: 657: 638: 628: 595: 591: 568:. Retrieved 563: 546: 534:. Retrieved 520: 514: 508: 500: 477: 445: 442:Conservation 413: 409: 402:. The chick 388:western gull 380: 358: 356: 342: 331:to northern 327:& south 312: 303: 272: 257: 231: 230: 217: 216: 212: 211: 185: 183: 167: 166: 147: 146: 18: 3165:SeaLifeBase 3100:Neotropical 3074:NatureServe 3022:iNaturalist 2872:Wikispecies 2642:Onychoprion 2624:Limicolavis 2614:Leucophaeus 2583:Ichthyaetus 2576:Hydroprogne 2538:Feducciavis 2483:Rhinoptilus 2467:Glareolinae 2440:Glareolinae 2407:Mioglareola 2397:Boutersemia 2371:Glareolidae 2329:Miomancalla 2306:Mancallinae 1945:Parvelorius 1891:Limnodromus 1456:Anarhynchus 1383:Pluvianidae 1363:Pluvianidae 1292:Genucrassum 1207:See below ↓ 1187:See below ↓ 1167:See below ↓ 1146:Telmatornis 1045:Palintropus 1013:Jiliniornis 991:Eupterornis 810:: 158–166. 570:10 November 552:Gill, Frank 536:11 November 485:mass deaths 462:(caused by 432:zooplankton 420:bathymetric 396:gular pouch 349:: southern 268:tennis ball 253:John Cassin 3254:Categories 3223:Q109578522 3191:Xeno-canto 2768:Cerestenia 2756:Turnicidae 2718:Thalasseus 2704:Sternalara 2600:Larosterna 2514:Chlidonias 2351:Dromadidae 2288:Fratercula 2281:Cerorhinca 2098:Miocepphus 2078:Divisulcus 2017:Thinocorus 1959:Prosobonia 1952:Phalaropus 1935:Paractitis 1812:Rostratula 1785:Pedionomus 1778:Oligonomus 1745:Microparra 1738:Metopidius 1714:Irediparra 1613:Haematopus 1556:Himantopus 1497:Oreopholus 1490:Jilniornis 1480:Elseyornis 1473:Dorypaltus 1463:Charadrius 1392:Vanellinae 1342:Chionoides 1266:Burhinidae 1132:Graculavus 1125:Dakotornis 1066:Scandiavis 1024:Morsoravis 930:Neognathae 899:shorebirds 897:Genera of 775:25 January 754:25 January 492:References 456:oil spills 452:introduced 428:upwellings 371:California 306:subspecies 299:Cape Scott 245:California 154:Brandt, JF 2786:Ortyxelos 2778:Eocliffia 2649:Pagophila 2635:Limosavis 2476:Cursorius 2428:Precursor 2387:Becassius 2154:Pinguinus 1877:Gallinago 1846:Bartramia 1691:Jacanidae 1646:Scolopaci 1525:Thinornis 1518:Pluvialis 1511:Phegornis 1504:Peltohyas 1372:Pluvianus 1323:Chionidae 1231:Charadrii 1178:Scolopaci 1158:Charadrii 910:Kingdom: 612:0004-8038 377:Behaviour 162:Species: 93:Kingdom: 87:Eukaryota 3217:Wikidata 3079:2.104487 3066:22694903 3040:11118999 2978:45509361 2916:22694903 2911:BirdLife 2857:Wikidata 2796:Turnipax 2711:Sternula 2680:Rynchops 2656:Phaetusa 2593:Laricola 2528:Creagrus 2449:Glareola 2322:Mancalla 2245:Aethiini 2192:Cepphini 1983:Villetus 1966:Scolopax 1915:Numenius 1853:Calidris 1839:Arenaria 1566:Kashinia 1426:Vanellus 1275:Burhinus 1076:Volgavis 1035:Nahmavis 918:Chordata 916:Phylum: 912:Animalia 863:by VIREO 826:28906143 710:17302841 620:85604692 384:incubate 363:Pliocene 264:breeding 243:and off 133:Family: 107:Chordata 103:Phylum: 97:Animalia 83:Domain: 60:IUCN 3.1 3265:Alcinae 3237:9780976 3004:2481302 2898:Avibase 2863:Q738204 2548:Gaviota 2498:Laridae 2456:Stiltia 2315:Alcodes 2201:Cepphus 2119:Alcinae 2062:Alcidae 2010:Attagis 1925:Nuntius 1908:Mirolia 1870:Elorius 1832:Actitis 1731:Janipes 1670:Hakawai 1332:Chionis 1101:Laornis 940:Order: 936:Neoaves 934:Clade: 922:Class: 804:The Auk 688:Bibcode 592:The Auk 464:El Niño 416:pelagic 404:fledges 365:of the 321:, 1811) 260:plumage 237:islands 223:seabird 196:, 1811) 143:Genus: 137:Alcidae 123:Order: 113:Class: 58: ( 3183:344115 3157:293824 3144:368025 3131:979353 3118:344115 3105:casauk 3053:177013 3011:GNAB: 2986:EURING 2965:casauk 2939:casauk 2891:casauk 2803:Turnix 2694:Sterna 2360:Dromas 2254:Aethia 2128:Alcini 1973:Tringa 1898:Limosa 1721:Jacana 1436:Viator 1352:Neilus 1282:Esacus 824:  708:  618:  610:  329:Alaska 319:Pallas 285:, off 279:Alaska 194:Pallas 156:, 1837 3178:WoRMS 3170:74294 3092:28706 3035:IRMNG 2960:eBird 2952:6WMWM 2936:BOW: 2929:10147 2687:Rissa 2607:Larus 2562:Gygis 2507:Anous 1990:Xenus 822:S2CID 616:S2CID 436:krill 3232:GBIF 3113:OBIS 3087:NCBI 3061:IUCN 3048:ITIS 3027:4547 2999:GBIF 2991:6480 2924:BOLD 2725:Xema 2161:Uria 2144:Alle 2137:Alca 2050:Lari 1198:Lari 924:Aves 777:2015 756:2015 706:PMID 608:ISSN 572:2022 538:2021 521:2020 426:and 304:Two 293:off 249:auks 117:Aves 2973:EoL 2947:CoL 2887:ABA 836:). 812:doi 808:125 696:doi 643:doi 600:doi 596:129 525:doi 390:or 369:in 297:'s 281:'s 277:to 239:in 3256:: 3234:: 3219:: 3193:: 3180:: 3167:: 3154:: 3141:: 3128:: 3115:: 3102:: 3089:: 3076:: 3063:: 3050:: 3037:: 3024:: 3001:: 2988:: 2975:: 2962:: 2949:: 2926:: 2913:: 2900:: 2889:: 2874:: 2859:: 2431:"? 842:50 838:In 820:. 806:. 802:. 735:^ 725:, 704:. 694:. 684:76 682:. 678:. 641:. 637:. 614:. 606:. 594:. 580:^ 562:. 519:. 513:. 373:. 345:– 323:: 315:– 270:. 255:. 2792:† 2781:? 2774:† 2764:† 2700:† 2662:† 2631:† 2627:? 2620:† 2589:† 2544:† 2534:† 2425:" 2423:† 2413:† 2403:† 2393:† 2383:† 2303:† 2150:† 2104:† 2094:† 2084:† 2074:† 1979:† 1941:† 1931:† 1921:† 1904:† 1866:† 1774:† 1751:† 1727:† 1676:† 1666:† 1562:† 1486:† 1469:† 1432:† 1407:? 1400:† 1348:† 1338:† 1288:† 1251:† 1149:? 1117:? 1112:† 1093:? 1088:† 1079:? 1072:† 1062:† 1052:† 1048:? 1041:† 1031:† 1027:" 1021:" 1019:† 1009:† 1005:? 998:† 994:? 987:† 977:† 890:e 883:t 876:v 828:. 814:: 779:. 758:. 712:. 698:: 690:: 651:. 645:: 622:. 602:: 574:. 540:. 527:: 511:" 507:" 353:. 339:. 335:. 317:( 215:( 192:( 62:)

Index


Conservation status
Near Threatened
IUCN 3.1
Scientific classification
Edit this classification
Eukaryota
Animalia
Chordata
Aves
Charadriiformes
Alcidae
Ptychoramphus
Brandt, JF
Binomial name
Pallas

seabird
North Pacific
islands
British Columbia
California
auks
John Cassin
plumage
breeding
tennis ball
Baja California peninsula
Alaska
Aleutian Islands

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