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LeConte's thrasher

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eggs are large-sized and bluish green that may either contain various degrees of brown spotting or no markings. The eggs are generally laid once a day and incubation begins once the last egg is laid, and lasts from 14 to 20 days. The male generally provides the food for the female, as well as food for the young during the brooding stages. The female is more likely to incubate during at night, however. If the nest is destroyed or preyed upon, a new one is generally built, as they can have up to three broods during the reproductive season.
499:. The song starts softly, then increases in volume, and has a more measured delivery than that of the crissal thrasher. The song bouts have been compared to curve-billed thrashers, but are higher pitched and marked by clear intervals. The song is generally uttered from an exposed perch, and is generally heard either in the morning or in the evening, though it has been heard at night. Females also sing on occasion, in a manner similar to juvenile male LeConte's. Calls include a short whistle note 75: 477: 31: 50: 1281: 1269: 486:
This thrasher is a highly terrestrial bird, and is only seen flying when nest building or feeding its young. It runs at a surprisingly fast pace, even at speeds to outpace a trotting horse. When it does run, its tail is generally held upward, exposing its buffy crissum. LeConte's thrasher is a ground
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of grasses. Off-road vehicle use is a minor factor, while military operations conducted in the region have been considered, but not properly researched. However, there are apparent areas of suitable acreage for the thrasher that have not been utilized, and its population in undisturbed regions appear
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possess a sandy pale-gray color. The primaries and secondaries are grayish brown. The rectrices are of a darker gray brown that contrasts with the plumage. Lores and ear-coverts are a mottled gray brown. The throat is an off-whitish color of a darker stripe. The chest and belly is puffy gray, and the
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The singing season typically begins in mid-autumn and peaks around late December and early January, when nest building begins. The nests are generally of a bulky build, with outer layer of twigs, a middle layer of twigs, grasses, and rootlets, and an inner layer of insulating materials such as fuzzy
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The egg dates generally range from February to the end of May in California, and in the Sonoran region from December to April, though dates have been listed as early as late January and as late as the latter part of June. The clutch size ranges from 2 to 5 eggs, but the number is generally 3–4. The
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such as beetles, scorpions, spiders, grasshoppers, butterflies, moth larvae, and small lizards and snakes. Eggs are also part of its diet, including those of its own species. Plant consumption includes seeds and berries. The LeConte's conserve water as an adaptation to their arid habitat and obtain
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have been used when the general distance of nests off the ground are usually only half as low. Both sexes take part in nest building, although the participation of the male varies. Nest fidelity is generally observed with the species until one of the mates die. The territories of the nesting pairs
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The young are fed by both parents during the fledgling period, which can span from 12 to 20 days, and can be continued to be fed after for 15 to 18 days afterward, especially if the female is brooding the next clutch. At around 30 days old, the fledglings disperse, and may form small groups.
234:, where it blends in with the sandy soils. LeConte's thrashers are nonmigratory birds that reside in the same territory annually. Although the species has been decreasing in certain areas of its range, in particular California, it still is abundant enough to not be considered for 533:
plant seeds, leaves or flowers. Feathers and artificial material have been used as well, but these instances are rare. Dense and thorny shrubs such as the saltbush are preferred sites, although artificial sites such as abandoned vehicles and heights as high as 2.4 m with
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These birds are terrestrial and only fly occasionally. Both sexes are heavily involved in the nest building, incubating, and brooding process, though each alternates with primary responsibility of the tasks. LeConte's thrashers frequently compete with species such as the
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to be more stable. Although the thrasher has relatively small numbers on a worldwide scale for a passerine, and has been listed as a species of concern in the state of California, its large range overall justifies its status as least concern.
574:) while simultaneously disappearing into a bush head first in a slow motion. Their territories are most actively defended from early December to early February. Potential competitors for food and nesting sites include the 392:
vent and uppertail coverts are of a warmer tint in contrast to the palish chest and belly. The underwing is both gray and buff, with a brown-chestnut iris, a black-sickle shaped bill, and legs that are nearly black.
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within the species. Their wings are typical of birds that are sedentary, as they are short and rounded. There are noted differences among the subspecies. The crown, back, shoulders, and rump of
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forager, and will dig small pits in leaf litter or soil to find its prey. It is a monogamous species, and generally seen in pairs, and juveniles may form small parties from two to eight birds.
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has a darker chest and underparts and a shorter tail. In its juvenile stages, the thrasher is darker brown, and its feathers looser and fluffy in appearance, especially on the vent.
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Lovette, I. J.; Arbogast, B. S.; Curry, R. L.; Zink, R. M.; Botero, C. A.; Sullivan, J. P.; Talaba, A. L.; Harris, R. B.; Rubenstein, D. R.; Ricklefs, R. E.; Bermingham, E. (2012).
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The song is a large, prolonged outpouring of warbled phrases that can be repeated two or several times and can be heard from considerable distances, which is typical of the genus
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and the fledgling dispersals. Males may give a visual display to intruding males by employing a head down position, showing off their crissum (the undertail
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and central and southern Arizona, and is a resident species throughout its range. It resides in some of the harshest climates in its region, including the
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thrashers, in particular the sickle-shaped bill, longer legs and smaller wings indicated its adaption to a preference to running and digging for food.
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what they need from their food. While they generally do not have to drink, there has been one recorded instance of such an event.
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as separate species, and treated as a separate species by other authors. and a name of Vizcaino thrasher if it becomes official.
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LeConte's thrasher weighs from 55 to 75 g (1.9 to 2.6 oz) and are 24.5–29 cm (9.6–11.4 in), and there is no
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These birds defend their territory year-round, but males are generally less territorial in the summer months during
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structure of the LeConte's is consistent with both its geographic distribution and genetics, with the
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The thrasher has had its population decline in certain regions of its range, notably the
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may be adjacent to one another due to food sources, although conflicts are rarely had.
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This bird ranges from California as far west as the San Joaquin Valley through southern
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regions. Major reasons for its decline include urbanization, cultivation of land for
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8. Le Conte's Thrasher (San Joaquin Valley Population) (Toxostoma lecontei lecontei)
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Some of the predators of the eggs, young, and adults of this species include
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group. The similarities with these three species contrasted with other
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Zink, Robert M.; Blackwell, Rachelle C.; Rojas-Soto, Octavio (1999).
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The two closest living relatives of LeConte's thrasher, the
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Birds of the Salton Sea: Status, Biogeography, and Ecology
463:, oil and gas development, and fire with the increase of 1025:"The Birds of North America Online: Le Conte's Thrasher" 511:, along with the double-noted whistling distress call. 1146:
McCaskie, Guy; Patten, Michael; Unitt, Philip (2003).
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American Association for the Advancement of Science
1125:. University of New Mexico Press. pp. 454–5. 1114: 1112: 1110: 1108: 692:10.2305/IUCN.UK.2018-2.RLTS.T22711121A131112198.en 545:LeConte's thrasher illustration from Merriam, 1895 344:in Baja California acting as a barrier initiating 254:, as well as being potential prey for the latter. 379:Leconte's thrasher illustration from Baird, 1905 332:only exhibits minor differences in plumage from 1119:Corman, Troy E.; Wise-Gervais, Cathryn (2005). 1215:. California State University Stanislaus. 2006 890:"Capítulo 15 Filogeografía de aves mexicanas" 8: 1245:. The Cornell Lab of Ornithology. p. 15 978:Zink, Robert M.; Dittmann, Donna L. (1999). 1627:Endemic birds of Southwestern North America 1234: 1232: 1230: 849:"Species Limits in the Le Conte's Thrasher" 761: 759: 757: 755: 753: 751: 749: 747: 745: 743: 741: 739: 737: 735: 733: 731: 729: 444:in the higher desert regions of its range. 1292: 727: 725: 723: 721: 719: 717: 715: 713: 711: 709: 328:by some authors, however. A proposed race 194: 48: 29: 20: 1078: 1076: 1074: 1072: 1070: 1068: 1066: 1064: 1062: 1060: 1058: 1056: 1054: 820: 818: 772:. Yale University Press. pp. 238–9. 690: 1637:Fauna of the Lower Colorado River Valley 1052: 1050: 1048: 1046: 1044: 1042: 1040: 1038: 1036: 1034: 616:in a least one instance, but not by the 656: 270:who eventually became president of the 1093:. Bureau of Land Management California 1662:Taxa named by George Newbold Lawrence 923:Molecular Phylogenetics and Evolution 519:The diet is omnivorous, and includes 292:) to northwestern Mexico (north east 7: 324:still is treated as a subspecies of 1612:IUCN Red List least concern species 1213:Endangered Species Recovery Program 678:IUCN Red List of Threatened Species 801:"Le Conte's or Vizcaino Thrasher)" 262:LeConte's thrasher is named after 14: 310:; west coast of Baja California. 1279: 1267: 73: 834:American Ornithological Society 667:BirdLife International (2018). 218:) is a pale bird found in the 1: 769:Wrens, Dippers, and Thrashers 318:American Ornithologists Union 1632:Fauna of the Colorado Desert 274:. There are two subspecies: 1647:Fauna of the Sonoran Desert 1122:Arizona Breeding Bird Atlas 943:10.1016/j.ympev.2011.07.009 605:They are rarely victims of 1678: 1240:"Bird Songs of California" 220:southwestern United States 825:Tweit, Robert C. (2015). 685:: e.T22711121A131112198. 558:Predators and competitors 316:has been proposed by the 264:Dr. John Lawrence LeConte 203:LeConte's thrasher range 202: 193: 175: 168: 70:Scientific classification 68: 46: 37: 28: 23: 1642:Fauna of the Yuma Desert 226:. It prefers to live in 1657:Birds described in 1851 627:, greater roadrunners, 1084:"LeConte's Thrasher - 766:Brewer, David (2001). 592:black-throated sparrow 546: 483: 380: 544: 479: 378: 346:allopatric speciation 1276:at Wikimedia Commons 618:brown-headed cowbird 576:northern mockingbird 288:, and south central 244:northern mockingbird 935:2012MolPE..63..219L 442:California thrasher 353:California thrasher 40:Conservation status 24:LeConte's thrasher 1589:Toxostoma-lecontei 1472:le-contes-thrasher 1361:Toxostoma_lecontei 1336:Toxostoma lecontei 1306:Toxostoma lecontei 1286:Toxostoma lecontei 1274:Toxostoma lecontei 1086:Toxostoma lecontei 671:Toxostoma lecontei 629:antelope squirrels 600:greater roadrunner 547: 484: 481:Toxostoma lecontei 457:San Joaquin Valley 418:San Joaquin Valley 381: 330:T.c. macmillanorum 252:greater roadrunner 215:Toxostoma lecontei 210:LeConte's thrasher 179:Toxostoma lecontei 1599: 1598: 1571:Open Tree of Life 1298:Taxon identifiers 1272:Media related to 779:978-0-300-09059-8 584:loggerhead shrike 408:and southwestern 400:Range and habitat 385:sexual dimorphism 248:loggerhead shrike 230:with very little 222:and northwestern 207: 206: 63: 1669: 1592: 1591: 1579: 1578: 1566: 1565: 1553: 1552: 1540: 1539: 1527: 1526: 1514: 1513: 1501: 1500: 1488: 1487: 1475: 1474: 1465: 1464: 1452: 1451: 1439: 1438: 1426: 1425: 1413: 1412: 1403: 1402: 1390: 1389: 1377: 1376: 1374:E34694637A8D655E 1364: 1363: 1351: 1350: 1340: 1339: 1338: 1325: 1324: 1323: 1293: 1284:Data related to 1283: 1271: 1255: 1254: 1252: 1250: 1244: 1236: 1225: 1224: 1222: 1220: 1201: 1164: 1163: 1143: 1137: 1136: 1116: 1103: 1102: 1100: 1098: 1092: 1080: 1029: 1028: 1021: 1015: 1014: 988: 975: 969: 968: 966: 965: 959: 953:. Archived from 920: 911: 905: 904: 902: 900: 894: 886: 880: 879: 853: 844: 838: 837: 831: 822: 813: 812: 810: 808: 797: 784: 783: 763: 704: 703: 701: 699: 694: 664: 570:surrounding the 465:invasive species 357:crissal thrasher 308:Rosalia thrasher 306:(Anthony, 1897) 198: 181: 161:T. lecontei 78: 77: 57: 52: 51: 33: 21: 1677: 1676: 1672: 1671: 1670: 1668: 1667: 1666: 1652:Birds of Mexico 1602: 1601: 1600: 1595: 1587: 1582: 1574: 1569: 1561: 1556: 1548: 1543: 1535: 1530: 1522: 1517: 1509: 1504: 1496: 1491: 1483: 1478: 1470: 1468: 1460: 1455: 1447: 1442: 1434: 1429: 1421: 1416: 1408: 1406: 1398: 1393: 1385: 1380: 1372: 1367: 1359: 1354: 1348: 1343: 1334: 1333: 1328: 1319: 1318: 1313: 1300: 1264: 1259: 1258: 1248: 1246: 1242: 1238: 1237: 1228: 1218: 1216: 1203: 1202: 1167: 1160: 1145: 1144: 1140: 1133: 1118: 1117: 1106: 1096: 1094: 1090: 1082: 1081: 1032: 1023: 1022: 1018: 1003:10.2307/4089682 986: 977: 976: 972: 963: 961: 957: 918: 913: 912: 908: 898: 896: 892: 888: 887: 883: 868:10.2307/1370231 851: 846: 845: 841: 829: 824: 823: 816: 806: 804: 799: 798: 787: 780: 765: 764: 707: 697: 695: 666: 665: 658: 653: 614:bronzed cowbird 560: 530: 517: 493: 474: 402: 373: 342:Vizcaíno Desert 338:phylogeographic 294:Baja California 260: 189: 183: 177: 164: 72: 64: 53: 49: 42: 17: 16:Species of bird 12: 11: 5: 1675: 1673: 1665: 1664: 1659: 1654: 1649: 1644: 1639: 1634: 1629: 1624: 1619: 1614: 1604: 1603: 1597: 1596: 1594: 1593: 1580: 1567: 1554: 1541: 1528: 1515: 1502: 1489: 1476: 1466: 1453: 1440: 1427: 1414: 1404: 1391: 1378: 1365: 1352: 1341: 1326: 1310: 1308: 1302: 1301: 1296: 1290: 1289: 1288:at Wikispecies 1277: 1263: 1262:External links 1260: 1257: 1256: 1226: 1165: 1158: 1138: 1132:978-0826333797 1131: 1104: 1030: 1016: 997:(4): 1021–38. 970: 929:(2): 219–229. 906: 881: 839: 814: 785: 778: 705: 655: 654: 652: 649: 643:, and various 559: 556: 529: 526: 516: 513: 492: 489: 473: 470: 414:Sonoran Desert 401: 398: 394:T.l. arenicola 372: 369: 359:, form as the 322:T.l. arenicola 314:T.l. arenicola 304:T.l. arenicola 296:and northwest 259: 256: 205: 204: 200: 199: 191: 190: 184: 173: 172: 166: 165: 158: 156: 152: 151: 144: 140: 139: 134: 130: 129: 124: 120: 119: 114: 110: 109: 104: 100: 99: 94: 90: 89: 84: 80: 79: 66: 65: 47: 44: 43: 38: 35: 34: 26: 25: 15: 13: 10: 9: 6: 4: 3: 2: 1674: 1663: 1660: 1658: 1655: 1653: 1650: 1648: 1645: 1643: 1640: 1638: 1635: 1633: 1630: 1628: 1625: 1623: 1620: 1618: 1615: 1613: 1610: 1609: 1607: 1590: 1585: 1581: 1577: 1572: 1568: 1564: 1559: 1555: 1551: 1546: 1542: 1538: 1533: 1529: 1525: 1520: 1516: 1512: 1507: 1503: 1499: 1494: 1490: 1486: 1481: 1477: 1473: 1467: 1463: 1458: 1454: 1450: 1445: 1441: 1437: 1432: 1428: 1424: 1419: 1415: 1411: 1405: 1401: 1396: 1392: 1388: 1383: 1379: 1375: 1370: 1366: 1362: 1357: 1353: 1346: 1342: 1337: 1331: 1327: 1322: 1316: 1312: 1311: 1309: 1307: 1303: 1299: 1294: 1287: 1282: 1278: 1275: 1270: 1266: 1265: 1261: 1241: 1235: 1233: 1231: 1227: 1214: 1210: 1208: 1200: 1198: 1196: 1194: 1192: 1190: 1188: 1186: 1184: 1182: 1180: 1178: 1176: 1174: 1172: 1170: 1166: 1161: 1159:9780520235939 1155: 1151: 1150: 1142: 1139: 1134: 1128: 1124: 1123: 1115: 1113: 1111: 1109: 1105: 1089: 1087: 1079: 1077: 1075: 1073: 1071: 1069: 1067: 1065: 1063: 1061: 1059: 1057: 1055: 1053: 1051: 1049: 1047: 1045: 1043: 1041: 1039: 1037: 1035: 1031: 1026: 1020: 1017: 1012: 1008: 1004: 1000: 996: 992: 985: 983: 974: 971: 960:on 2012-07-12 956: 952: 948: 944: 940: 936: 932: 928: 924: 917: 910: 907: 891: 885: 882: 877: 873: 869: 865: 862:(1): 132–38. 861: 857: 850: 843: 840: 835: 828: 821: 819: 815: 802: 796: 794: 792: 790: 786: 781: 775: 771: 770: 762: 760: 758: 756: 754: 752: 750: 748: 746: 744: 742: 740: 738: 736: 734: 732: 730: 728: 726: 724: 722: 720: 718: 716: 714: 712: 710: 706: 693: 688: 684: 680: 679: 674: 672: 663: 661: 657: 650: 648: 646: 642: 638: 634: 633:domestic cats 630: 626: 625:birds of prey 621: 619: 615: 611: 608: 603: 601: 597: 593: 589: 585: 581: 580:sage thrasher 577: 573: 569: 565: 557: 555: 551: 543: 539: 536: 527: 525: 522: 514: 512: 510: 506: 502: 498: 490: 488: 482: 478: 471: 469: 466: 462: 458: 454: 450: 445: 443: 439: 435: 431: 427: 423: 419: 415: 411: 407: 399: 397: 395: 390: 389:T.c. lecontei 386: 377: 370: 368: 366: 362: 358: 354: 349: 347: 343: 339: 335: 334:T.l. lecontei 331: 327: 323: 319: 315: 311: 309: 305: 301: 299: 295: 291: 287: 283: 279: 278:T.l. lecontei 275: 273: 269: 265: 257: 255: 253: 249: 245: 239: 237: 233: 229: 225: 221: 217: 216: 211: 201: 197: 192: 187: 182: 180: 174: 171: 170:Binomial name 167: 163: 162: 157: 154: 153: 150: 149: 145: 142: 141: 138: 135: 132: 131: 128: 127:Passeriformes 125: 122: 121: 118: 115: 112: 111: 108: 105: 102: 101: 98: 95: 92: 91: 88: 85: 82: 81: 76: 71: 67: 61: 56: 55:Least Concern 45: 41: 36: 32: 27: 22: 19: 1305: 1247:. 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Avibase 647:species. 501:suuuweeee 497:Toxostoma 461:livestock 449:Coachella 365:Toxostoma 155:Species: 148:Toxostoma 93:Kingdom: 87:Eukaryota 1537:2.103738 1524:22711121 1498:11164895 1387:22711121 1382:BirdLife 1321:Q3181161 1315:Wikidata 951:21867766 836:: 32–34. 807:14 March 528:Breeding 472:Behavior 455:and the 453:Imperial 426:creosote 422:saltbush 416:and the 361:lecontei 355:and the 326:lecontei 258:Taxonomy 238:status. 186:Lawrence 133:Family: 107:Chordata 103:Phylum: 97:Animalia 83:Domain: 60:IUCN 3.1 1462:5231703 1369:Avibase 1011:4089682 991:The Auk 931:Bibcode 876:1370231 641:coyotes 607:cowbird 568:coverts 564:molting 509:pooh-ip 505:hew-eep 290:Arizona 228:deserts 143:Genus: 137:Mimidae 123:Order: 113:Class: 58: ( 1576:410208 1563:lecthr 1511:178645 1469:GNAB: 1444:EURING 1436:lecthr 1410:lecthr 1400:117018 1349:lecoth 1156:  1129:  1009:  949:  874:  776:  572:cloaca 432:, and 406:Nevada 298:Sonora 224:Mexico 188:, 1851 1550:55419 1493:IRMNG 1485:14892 1449:10750 1431:eBird 1423:57MNW 1407:BOW: 1243:(PDF) 1091:(PDF) 1007:JSTOR 987:(PDF) 958:(PDF) 919:(PDF) 893:(PDF) 872:JSTOR 852:(PDF) 830:(PDF) 645:snake 266:, an 1545:NCBI 1519:IUCN 1506:ITIS 1457:GBIF 1395:BOLD 1251:2015 1221:2015 1154:ISBN 1127:ISBN 1099:2015 947:PMID 901:2015 809:2015 774:ISBN 700:2021 683:2018 637:dogs 515:Diet 491:Song 410:Utah 286:Utah 250:and 117:Aves 1418:CoL 1356:ADW 1345:ABA 999:doi 995:116 939:doi 864:doi 687:doi 507:or 300:). 1608:: 1586:: 1573:: 1560:: 1547:: 1534:: 1521:: 1508:: 1495:: 1482:: 1459:: 1446:: 1433:: 1420:: 1397:: 1384:: 1371:: 1358:: 1347:: 1332:: 1317:: 1229:^ 1211:. 1168:^ 1107:^ 1033:^ 1005:. 993:. 989:. 984:)" 945:. 937:. 927:63 925:. 921:. 870:. 860:99 858:. 854:. 832:. 817:^ 788:^ 708:^ 681:. 675:. 659:^ 639:, 635:, 631:, 594:, 590:, 586:, 582:, 578:, 503:, 451:, 428:, 424:, 348:. 246:, 1253:. 1223:. 1209:" 1205:" 1162:. 1135:. 1101:. 1088:" 1027:. 1013:. 1001:: 967:. 941:: 933:: 903:. 878:. 866:: 811:. 782:. 702:. 689:: 673:" 669:" 212:( 62:)

Index


Conservation status
Least Concern
IUCN 3.1
Scientific classification
Edit this classification
Eukaryota
Animalia
Chordata
Aves
Passeriformes
Mimidae
Toxostoma
Binomial name
Lawrence

southwestern United States
Mexico
deserts
vegetation
vulnerable
northern mockingbird
loggerhead shrike
greater roadrunner
Dr. John Lawrence LeConte
entomologist
American Association for the Advancement of Science
California
Utah
Arizona

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