Knowledge (XXG)

Willow flycatcher

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populations of willow flycatchers increased. In these sites 90% of the willow flycatcher's nests were found in native vegetation, only 10% were in mixed vegetation (native species and saltcedar) and few were in areas dominated by saltcedar. However, because willow flycatchers can and do breed in some locations within saltcedar habitat, it occasionally serves as vital habitat in the recovery of this species.
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subspecies found in Arizona, California, Colorado, Nevada, New Mexico, Texas, and Utah. It was listed in 1995, when it was known to breed at only about 75 sites in riparian areas throughout the American southwest. The breeding population was estimated at between 300 and 500 pairs. Breeding occurs
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The subspecies are best distinguished from each other by their songs. In addition, the four subspecies have significant genetic differences based on mitochondrial DNA analysis. Their winter ranges have been elucidated using mitochondrial DNA genetic studies of 172 birds sampled in winter combined
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found throughout the Southwest, where it has replaced essential vegetation by outcompeting native species in riparian areas where the southwestern willow flycatcher is found. In two sites, one in Arizona and the other in New Mexico, native trees were able to replace patches of saltcedar and
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Adults have brown-olive upperparts, darker on the wings and tail, with whitish underparts; they have an indistinct white eye ring, white wing bars and a small bill. The breast is washed with olive-gray. The upper part of the bill is gray; the lower part is orangish.
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Durst, Scott L.; Theimer, Tad C.; Paxton, Eben H.; Sogge, Mark K. (2008). "Age, habitat, and yearly variation in the diet of a generalist insectivore, the southwestern willow flycatcher".
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in California and to over 2,600 m (8,530 ft) in Arizona, southwestern Colorado, and north-central New Mexico. This subspecies was described by A.R. Phillips in 1948.
516:) are thought to play a critical role in widening riparian width, openings in dense vegetation, and retention of surface water through the willow flycatcher breeding season. 677:, often selecting winter habitat near water. Willow flycatchers travel approximately 1,500–8,000 km (930–4,970 mi) each way between wintering and breeding areas. 696:
Willow flycatchers are generalist insectivores, and the insects which comprise their diet vary substantially across different habitats. For example, flies of the order
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There are four subspecies recognized, all of which breed in North America (including three subspecies that breed in California). At one time, this bird and the
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in 1918, it breeds in California from Tulare County north along the western side of the Sierra Nevada, and in Oregon and Washington west of the Cascade range.
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made up the majority of adult willow flycatcher diets in Ontario, Canada, but only composed 10.6% of the diet of California flycatchers, who instead favor
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Bean, Daniel; Dudley, Tom (2012). "Tamarisk biocontrol, endangered species risk and resolution of conflict through riparian restoration".
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Prescott, David R.C.; Middleton, Alex L. A. (1988). "Feeding-time minimizization and the territorial behavior of the willow flycatcher".
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A Southwestern Willow Flycatcher Natural History Summary and Survey Protocol: Technical Report NPS/NAUCPRS/NRTR-97/12
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Sibley, David Allen (2001). Elphick, Chris; Dunning, Jr., John B.; Sibley, David Allen (eds.).
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Sogge, Mark K.; Marshall, Robert M.; Sferra, Susan J.; Tibbitts, Timothy J. (May 1997).
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Paxton, Eben H.; Unitt, Philip; Sogge, Mark K.; Whitfield, Mary; Keim, Paul (2011).
372:) breeds in California east of the Sierra/Cascade axis, from the Oregon border into 1680: 1435: 1269: 1164:"Habitat, diet, and foraging ecology of willow flycatcher in Sierra Nevada meadows" 479: 1461: 1422: 478:
This species is experiencing population declines throughout the Southwest due to
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in 1828. It breeds from the eastern coast of the United States to the western
472: 319:. Their song is the only reliable method to tell them apart in the field. The 1320: 800: 783: 639: 468: 456: 179: 159: 119: 1148: 1121: 1089:(Report). National Park Service and Northern Arizona University. p. 37 1163: 1674: 1601: 1314: 1276: 713: 651: 354:) is the Pacific Slope subspecies of the willow flycatcher. Described by 139: 1694: 1474: 1381: 670: 265:
Summer breeding and winter ranges of willow flycatcher subspecies from
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and Pilgrim, De Luz, French, and Las Flores creeks; as well as on the
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The Great Basin/Northern Rockies subspecies of the willow flycatcher (
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and often near water, across the United States and southern
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10.1614/0890-037X(2004)018[1542:STSESA]2.0.CO;2
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Graduate Theses and Dissertations - Utah State University
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The largest remaining population in California is on the
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and invasive grass species. One of these is saltcedar (
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with plumage coloration and morphological differences.
784:"Winter Distribution of Willow Flycatcher Subspecies" 1664: 1304: 1050: 339:The four subspecies of the willow flycatcher are: 1035:. Ottawa: National Museum of Canada. p. 255. 956:Sferra, Susan; Paxton, Eben; Sogge, Mark (2008). 758:10.2305/IUCN.UK.2016-3.RLTS.T22699848A93751510.en 1185:. New York, USA: Alfred A. Knopf. p. 389. 826:. U.S. Fish and Wildlife Service Nevada Office 269:southwestern willow flycatcher survey protocol 8: 1183:The Sibley Guide to Bird Life & Behavior 1292: 1242: 315:) were considered to be a single species, 228: 81: 40: 31: 799: 777: 775: 756: 501:to preserve habitat for this subspecies. 553: 420:and 910 m (3,000 ft) at upper 725: 669:, and in small numbers as far south as 654:in a vertical fork in a shrub or tree. 627:15.5–18.0 mm (0.61–0.71 in) 617:10.5–12.3 mm (0.41–0.48 in) 597:68.7–75.6 mm (2.70–2.98 in) 384:. There has been very little study of 1282:Audio recordings of Willow flycatcher 1216:. Colorado Plateau Research Station. 1214:"Southwestern Willow Flycatcher Site" 530:subspecies of the willow flycatcher ( 416:to 800 m (2,640 ft) at the 7: 1498:willow-flycatcher-empidonax-traillii 607:54–64.5 mm (2.13–2.54 in) 475:constitutes the main winter range. 403:The southwestern willow flycatcher ( 323:commemorates the Scottish zoologist 1718:IUCN Red List least concern species 744:IUCN Red List of Threatened Species 388:in California. It was described by 25: 874:DeLoach, CJ; Dudley, Tom (2004). 1753:Taxa named by John James Audubon 982:10.1111/j.1526-100X.2008.00357.x 567:130–150 mm (5.2–6 in) 399:– Southwestern willow flycatcher 106: 1264:Willow flycatcher photo gallery 1225:BirdLife species factsheet for 733:BirdLife International (2016). 1738:Native birds of Eastern Canada 1733:Native birds of Western Canada 680:This bird's song is a sneezed 350:The little willow flycatcher ( 1: 237:Approximate distribution map 1266:at VIREO (Drexel University) 283:) is a small insect-eating, 1162:Dietrich, Scott E. (2020). 1057:. New York: Knopf. p.  1008:. NatureServe Explorer 2.0" 577:13.5 g (0.48 oz) 412:from near sea level on the 376:and possibly into northern 18:Southwest willow flycatcher 1769: 1743:Birds of the United States 1006:Empidonax traillii extimus 854:Cornell Lab of Ornithology 638:Their breeding habitat is 587:220 mm (8.5 in) 346:– Little willow flycatcher 1270:Interactive range map of 1251:"Willow flycatcher media" 1053:The Sibley Guide to Birds 1031:Godfrey, W. Earl (1966). 935:10.1007/s10526-011-9436-9 556: 505:considers the subspecies 236: 227: 208: 201: 103:Scientific classification 101: 79: 70: 48: 39: 34: 1256:Internet Bird Collection 1012:explorer.natureserve.org 801:10.1525/cond.2011.090200 751:: e.T22699848A93751510. 657:These neotropical birds 634:Distribution and habitat 495:San Pedro River Preserve 1748:Birds described in 1828 480:habitat loss/alteration 1728:Birds of North America 1122:10.1525/cond.2008.8493 557:Standard Measurements 510:North American beavers 270: 642:thickets, especially 497:was purchased by the 445:Santa Margarita River 429:South Fork Kern River 418:South Fork Kern River 414:Santa Margarita River 325:Thomas Stewart Traill 264: 1234:"Empidonax traillii" 1149:10.1093/auk/105.1.17 684:. The call is a dry 1047:Sibley, David Allen 1033:The Birds of Canada 974:2008ResEc..16..146S 962:Restoration Ecology 927:2012BioCo..57..331D 846:"Willow flycatcher" 534:) was described by 485:Tamarix ramosissima 317:Traill's flycatcher 73:Conservation status 1666:Muscicapa traillii 1654:Empidonax-traillii 1374:empidonax-traillii 1361:Empidonax_traillii 1336:Empidonax traillii 1306:Empidonax traillii 1277:IUCN Red List maps 1272:Empidonax traillii 1227:Empidonax traillii 737:Empidonax traillii 499:Nature Conservancy 437:San Luis Rey River 422:San Luis Rey River 280:Empidonax traillii 271: 254: Non-breeding 212:Empidonax traillii 59:Empidonax traillii 35:Willow flycatcher 1705: 1704: 1636:Open Tree of Life 1628:willow-flycatcher 1485:willow-flycatcher 1298:Taxon identifiers 1192:978-1-4000-4386-6 631: 630: 514:Castor canadensis 407:) is a federally 313:Empidonax alnorum 295:family native to 293:tyrant flycatcher 275:willow flycatcher 259: 258: 96: 16:(Redirected from 1760: 1698: 1697: 1685: 1684: 1683: 1657: 1656: 1644: 1643: 1631: 1630: 1618: 1617: 1605: 1604: 1592: 1591: 1579: 1578: 1566: 1565: 1553: 1552: 1540: 1539: 1527: 1526: 1514: 1513: 1501: 1500: 1488: 1487: 1478: 1477: 1465: 1464: 1452: 1451: 1439: 1438: 1426: 1425: 1416: 1415: 1403: 1402: 1390: 1389: 1387:5BC4E0EFAB129B9D 1377: 1376: 1364: 1363: 1351: 1350: 1340: 1339: 1338: 1325: 1324: 1323: 1293: 1260: 1246: 1241: 1221: 1197: 1196: 1178: 1172: 1171: 1159: 1153: 1152: 1132: 1126: 1125: 1105: 1099: 1098: 1096: 1094: 1088: 1079: 1073: 1072: 1056: 1043: 1037: 1036: 1028: 1022: 1021: 1019: 1018: 1000: 994: 993: 953: 947: 946: 910: 904: 903: 871: 865: 864: 862: 860: 842: 836: 835: 833: 831: 820: 814: 813: 803: 779: 770: 769: 767: 765: 760: 730: 554: 449:Santa Ynez River 309:alder flycatcher 253: 247: 241: 232: 214: 194:E. traillii 111: 110: 90: 85: 84: 66: 65: 64: 62: 44: 32: 21: 1768: 1767: 1763: 1762: 1761: 1759: 1758: 1757: 1708: 1707: 1706: 1701: 1693: 1688: 1679: 1678: 1673: 1660: 1652: 1647: 1639: 1634: 1626: 1621: 1613: 1608: 1600: 1597:Observation.org 1595: 1587: 1582: 1574: 1569: 1561: 1556: 1548: 1543: 1535: 1530: 1522: 1517: 1509: 1504: 1496: 1491: 1483: 1481: 1473: 1468: 1460: 1455: 1447: 1442: 1434: 1429: 1421: 1419: 1411: 1406: 1398: 1393: 1385: 1380: 1372: 1367: 1359: 1354: 1348: 1343: 1334: 1333: 1328: 1319: 1318: 1313: 1300: 1249: 1232: 1212: 1209: 1203: 1201: 1200: 1193: 1180: 1179: 1175: 1161: 1160: 1156: 1134: 1133: 1129: 1107: 1106: 1102: 1092: 1090: 1086: 1081: 1080: 1076: 1069: 1045: 1044: 1040: 1030: 1029: 1025: 1016: 1014: 1002: 1001: 997: 955: 954: 950: 912: 911: 907: 880:Weed Technology 873: 872: 868: 858: 856: 850:All About Birds 844: 843: 839: 829: 827: 822: 821: 817: 781: 780: 773: 763: 761: 732: 731: 727: 722: 694: 667:Central America 636: 548: 540:Rocky Mountains 524: 457:Lake Mead Delta 401: 382:E. t. brewsteri 366: 348: 344:E. t. brewsteri 333: 305: 255: 251: 249: 248: Migration 245: 243: 239: 223: 216: 210: 197: 105: 97: 86: 82: 75: 57: 55: 54: 53: 52: 28: 27:Species of bird 23: 22: 15: 12: 11: 5: 1766: 1764: 1756: 1755: 1750: 1745: 1740: 1735: 1730: 1725: 1720: 1710: 1709: 1703: 1702: 1700: 1699: 1686: 1670: 1668: 1662: 1661: 1659: 1658: 1645: 1632: 1619: 1606: 1593: 1580: 1567: 1554: 1541: 1528: 1515: 1502: 1489: 1479: 1466: 1453: 1440: 1427: 1417: 1404: 1391: 1378: 1365: 1352: 1341: 1326: 1310: 1308: 1302: 1301: 1296: 1290: 1289: 1279: 1267: 1261: 1247: 1230: 1222: 1208: 1207:External links 1205: 1199: 1198: 1191: 1173: 1154: 1127: 1116:(3): 514–525. 1100: 1074: 1067: 1038: 1023: 995: 968:(1): 146–154. 948: 905: 866: 837: 815: 794:(3): 608–618. 771: 724: 723: 721: 718: 693: 692:Food resources 690: 650:. They make a 635: 632: 629: 628: 625: 619: 618: 615: 609: 608: 605: 599: 598: 595: 589: 588: 585: 579: 578: 575: 569: 568: 565: 559: 558: 547: 544: 532:E. t. traillii 523: 521:E. t. traillii 518: 467:indicate that 453:Colorado River 441:Camp Pendleton 400: 394: 365: 360: 352:E.t. brewsteri 347: 341: 332: 329: 304: 301: 257: 256: 250: 244: 242: Breeding 238: 234: 233: 225: 224: 217: 206: 205: 199: 198: 191: 189: 185: 184: 177: 173: 172: 167: 163: 162: 157: 153: 152: 147: 143: 142: 137: 133: 132: 127: 123: 122: 117: 113: 112: 99: 98: 80: 77: 76: 71: 68: 67: 46: 45: 37: 36: 26: 24: 14: 13: 10: 9: 6: 4: 3: 2: 1765: 1754: 1751: 1749: 1746: 1744: 1741: 1739: 1736: 1734: 1731: 1729: 1726: 1724: 1721: 1719: 1716: 1715: 1713: 1696: 1691: 1687: 1682: 1676: 1672: 1671: 1669: 1667: 1663: 1655: 1650: 1646: 1642: 1637: 1633: 1629: 1624: 1620: 1616: 1611: 1607: 1603: 1598: 1594: 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: 1480: 1476: 1471: 1467: 1463: 1458: 1454: 1450: 1445: 1441: 1437: 1432: 1428: 1424: 1418: 1414: 1409: 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: 1283: 1280: 1278: 1274: 1273: 1268: 1265: 1262: 1258: 1257: 1252: 1248: 1245: 1239: 1235: 1231: 1229: 1228: 1223: 1219: 1215: 1211: 1210: 1206: 1204: 1194: 1188: 1184: 1177: 1174: 1169: 1165: 1158: 1155: 1150: 1146: 1142: 1138: 1131: 1128: 1123: 1119: 1115: 1111: 1104: 1101: 1085: 1078: 1075: 1070: 1068:0-679-45122-6 1064: 1060: 1055: 1054: 1048: 1042: 1039: 1034: 1027: 1024: 1013: 1009: 1007: 999: 996: 991: 987: 983: 979: 975: 971: 967: 963: 959: 952: 949: 944: 940: 936: 932: 928: 924: 920: 916: 909: 906: 901: 897: 893: 889: 886:: 1542–1551. 885: 881: 877: 870: 867: 855: 851: 847: 841: 838: 825: 819: 816: 811: 807: 802: 797: 793: 789: 785: 778: 776: 772: 759: 754: 750: 746: 745: 740: 738: 729: 726: 719: 717: 715: 711: 708: 706: 705:Lepidopterans 701: 700: 691: 689: 687: 683: 678: 676: 675:South America 672: 668: 664: 660: 655: 653: 649: 645: 641: 633: 626: 624: 621: 620: 616: 614: 611: 610: 606: 604: 601: 600: 596: 594: 591: 590: 586: 584: 581: 580: 576: 574: 571: 570: 566: 564: 561: 560: 555: 552: 545: 543: 541: 537: 533: 529: 522: 519: 517: 515: 511: 508: 504: 500: 496: 491: 488: 486: 481: 476: 474: 470: 466: 465:E. t. extimus 462: 458: 454: 450: 446: 442: 438: 434: 430: 425: 423: 419: 415: 410: 406: 405:E. t. extimus 398: 397:E. t. extimus 395: 393: 391: 387: 386:E. t. adastus 383: 379: 375: 371: 370:E. t. adastus 364: 363:E. t. adastus 361: 359: 357: 353: 345: 342: 340: 337: 330: 328: 326: 322: 318: 314: 310: 302: 300: 298: 297:North America 294: 290: 286: 282: 281: 276: 268: 263: 235: 231: 226: 221: 215: 213: 207: 204: 203:Binomial name 200: 196: 195: 190: 187: 186: 183: 182: 178: 175: 174: 171: 168: 165: 164: 161: 160:Passeriformes 158: 155: 154: 151: 148: 145: 144: 141: 138: 135: 134: 131: 128: 125: 124: 121: 118: 115: 114: 109: 104: 100: 94: 89: 88:Least Concern 78: 74: 69: 63: 60: 51: 50:E. t. extimus 47: 43: 38: 33: 30: 19: 1665: 1305: 1271: 1254: 1237: 1226: 1202: 1182: 1176: 1167: 1157: 1140: 1136: 1130: 1113: 1109: 1103: 1091:. 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Index

Southwest willow flycatcher

Empidonax traillii call
Conservation status
Least Concern
IUCN 3.1
Scientific classification
Edit this classification
Eukaryota
Animalia
Chordata
Aves
Passeriformes
Tyrannidae
Empidonax
Binomial name
Audubon


USGS
neotropical
bird
tyrant flycatcher
North America
alder flycatcher
binomial
Thomas Stewart Traill
Oberholser
Modoc County
Inyo County

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