42:
539:. The eggs are pale blue and speckled, about 4.7 × 3.6 cm, and the normal clutch is three or four. Incubation lasts about 28 days, and young fledge 42 days after hatching. Egg survival has been measured at 28% and nestling survival at 40%; storms that destroy nests are an important cause of losses. Based on observations of family groups, only two young normally fledge. Unlike most heron species, whistling herons care for young after leaving the nest; juveniles beg for food by hissing with their wings drooped.
1175:
1806:
103:
242:
78:
472:, often in drier grassy situations than other herons, but also in a wide variety of open waterlogged or shallowly submerged terrain. Because it roosts in trees, it particularly likes regions where open areas are mixed with woodlots. It has no objection to human-altered habitats such as pastures and roadsides, and it often perches on fenceposts.
358:
The overall impression of standing birds is gray, with flying birds showing conspicuous white rear parts (lower back, belly, and tail). In both subspecies, adults' upperparts except the lower back are blue-gray. The feathers of the sides of head, sides of the neck, breast, and scapular area are
371:; the color varies from bird to bird. In the nominate subspecies, the crown and crest (separate plumes up to 4 cm long on the nape) are black and the upper wing coverts are cinnamon-colored; the crown and crest are slate-gray and the upper wing coverts are honey-colored (or "chamois") in
613:
Hruska, J.P.; Holmes, J.; Oliveros, C.; Shakya, S.; Lavretsky, P.; McCracken, K.G.; Sheldon, F.H.; Moyle, R.G. (2023). "Ultraconserved elements resolve the phylogeny and corroborate patterns of molecular rate variation in herons (Aves: Ardeidae)".
520:) from a standing position. It may allow humans to approach fairly closely rather than leave a good feeding spot. It typically feeds alone or in pairs, but is sometimes seen in groups up to 100, especially before roosting for the night.
389:
easily imitated" or "a distinctive, characteristic, far-carrying, melodious whistle" that "can be rendered 'kee, kee, kee.'" It may also give "a slow, drawn-out whistle" when taking off. The alarm call is a harsh
375:. The bill is pink with blue to violet at the base and the distal third black, the legs are greenish and rather short, and there is a fairly big area of bare bluish skin around the eye.
378:
Juveniles have the same overall pattern but are duller than adults, with the crown lighter, the breast light gray, and the throat and sides unstained white. Chicks are undescribed.
516:
in one reported incident). It often holds still but also walks very slowly and may use more active techniques, even running after prey or catching flying insects (notably
355:
The whistling heron measures 53 to 64 cm in length and weighs 521 to 546 g. The southern subspecies is bigger but has a shorter bill in proportion to the body.
2216:
1991:
906:
2242:
2030:
2296:
2190:
1965:
2229:
2004:
899:
547:
1174:
819:
779:
729:
461:
at least in northeastern
Venezuela, where it does not occur from November to January, but remains all year in other areas, such as
2351:
528:
In a courtship display, the birds fly back and forth and glide in circles. A captive pair displayed by raising their plumes.
2331:
892:
2234:
2009:
1805:
475:
Although patchily distributed, it is common in many areas, with no population considered vulnerable. It benefits from
2346:
2311:
2164:
2100:
1913:
2336:
2326:
2247:
2035:
641:
841:
2341:
2316:
102:
2321:
2043:
311:
study published in 2023 found that within the heron family the whistling heron is most closely related to the
397:
Unlike other herons, in flight it has fast, duck-like wingbeats and usually does not retract its neck fully.
884:
343:
231:
2048:
1865:
531:
This species nests alone, unlike most herons, which nest in colonies. It may nest in mature trees such as
1900:
1827:
308:
41:
483:. As a successful heron of dry tropical country, it has been compared to two species originating in the
2268:
2169:
2082:
1918:
462:
214:
591:
468:
It occurs at elevations up to 500 m (with a sight record from 2300 m) in seasonally flooded
1892:
1874:
1232:
1738:
67:
1499:
1926:
864:
492:
249:
97:
2273:
2087:
1770:
1553:
1217:
1996:
1564:
1536:
1516:
2301:
2255:
2221:
2177:
2069:
2022:
1939:
1365:
1304:
1252:
1036:
916:
815:
775:
725:
550:
formerly used its neck plumes as trade items, though not so heavily as to reduce populations.
333:
842:"Behavior of whistling and capped herons in the seasonal savannas of Venezuela and Argentina"
2260:
2074:
1526:
1283:
1045:
856:
645:
623:
586:
509:
2095:
1905:
1879:
2306:
2056:
1758:
513:
568:
976:
961:
458:
453:. Recent records suggest that it may be expanding its range northward and eastward in
241:
191:
154:
2290:
2155:
2017:
1419:
1134:
577:
535:
or exotic trees. One nest in
Argentina was loosely built of sticks about 4m up in a
476:
279:
87:
82:
2113:
1944:
1593:
1468:
1314:
1107:
955:
769:
719:
488:
312:
2182:
1931:
627:
2140:
2203:
2149:
1978:
1859:
1747:
1649:
1506:
1461:
1454:
1345:
1241:
1097:
1085:
1054:
1015:
924:
480:
368:
360:
649:
2108:
1777:
1710:
1694:
1683:
1642:
1635:
1628:
1412:
1405:
1384:
1273:
1074:
536:
323:
1850:
385:" or "a high, reedy, complaining whistle, often doubled or uttered in a ser,
1784:
1676:
1614:
1543:
1447:
1398:
1377:
1334:
1324:
1114:
1064:
1000:
532:
517:
508:
This species eats any small dryland and marsh animals it can catch, or even
484:
450:
422:
114:
2134:
2061:
1844:
1727:
1720:
1703:
1659:
1607:
1584:
1483:
1440:
1433:
1426:
1391:
1354:
1293:
1125:
943:
920:
840:
Kushlan, James A.; Hancock, James A.; Pinowski, J.; Pinowska, B. (1982).
434:
418:
381:
The bird is named for its most common call, a "loud, flute-like whistled
174:
134:
55:
2195:
1970:
1887:
1666:
1621:
1600:
1025:
868:
469:
442:
430:
414:
17:
1573:
937:
454:
438:
410:
124:
59:
2208:
1983:
1957:
1821:
860:
1952:
1193:
1149:
949:
446:
364:
283:
164:
144:
1825:
1191:
974:
888:
346:, 1824) – east Bolivia and south Brazil to northeast Argentina
359:
basically white but are stained gold to buff, perhaps by the
650:"Ibis, spoonbills, herons, Hamerkop, Shoebill, pelicans"
1766:
1716:
1672:
1655:
1549:
1532:
1522:
1512:
1495:
1373:
1330:
1320:
1310:
1300:
1289:
1279:
1269:
1229:
1213:
1103:
1093:
1070:
1060:
1012:
996:
2124:
1834:
1757:
1737:
1693:
1583:
1563:
1482:
1364:
1344:
1260:
1251:
1228:
1204:
1148:
1124:
1084:
1044:
1035:
1011:
987:
336:, 1949 – northeast Colombia and northwest Venezuela
592:10.2305/IUCN.UK.2016-3.RLTS.T22696913A93592468.en
814:. Princeton University Press. pp. 213–214.
278:) is a medium-sized, often terrestrial heron of
900:
724:. Oxford University Press. pp. 208–214.
718:Kushlan, James A.; Hancock, James. A (2005).
8:
768:Hilty, Steven L.; Brown, William L. (1986).
1822:
1488:
1257:
1201:
1188:
1041:
984:
971:
907:
893:
885:
774:. Princeton University Press. p. 66.
713:
711:
709:
707:
705:
703:
701:
699:
697:
695:
693:
691:
240:
76:
40:
31:
689:
687:
685:
683:
681:
679:
677:
675:
673:
671:
590:
291:. There are two subspecies, the southern
805:
803:
801:
799:
797:
282:. It is the only species placed in the
763:
761:
759:
757:
755:
753:
751:
749:
747:
559:
835:
833:
831:
656:. International Ornithologists' Union
7:
2297:IUCN Red List least concern species
578:IUCN Red List of Threatened Species
25:
1804:
1173:
771:A Guide to the Birds of Colombia
654:IOC World Bird List Version 13.2
101:
567:BirdLife International (2016).
1:
628:10.1093/ornithology/ukad005
2368:
1800:
1491:
1200:
1187:
1170:
983:
970:
932:
810:Hilty, Steven L. (2003).
255:
248:
239:
220:
213:
98:Scientific classification
96:
74:
65:
48:
39:
34:
927:and their extinct allies
585:: e.T22696913A93592468.
401:Distribution and habitat
367:or by secretions of the
2352:Birds described in 1824
437:, western and southern
309:molecular phylogenetic
2332:Birds of the Pantanal
2269:Paleobiology Database
2083:Paleobiology Database
543:Cultural significance
463:Buenos Aires Province
648:, eds. (July 2023).
317:Pilherodius pileatus
449:, and northeastern
68:Conservation status
2347:Birds of Venezuela
2312:Birds of Argentina
2114:Syrigma-sibilatrix
1880:Syrigma_sibilatrix
1866:Syrigma sibilatrix
1836:Syrigma sibilatrix
812:Birds of Venezuela
644:; Donsker, David;
571:Syrigma sibilatrix
548:Indigenous peoples
493:black-headed heron
459:seasonal movements
425:. The subspecies
387:wueeee, wueeee,.…,
331:S. s. fostersmithi
297:S. s. fostersmithi
275:Syrigma sibilatrix
224:Syrigma sibilatrix
206:S. sibilatrix
2337:Birds of Paraguay
2327:Birds of Colombia
2284:
2283:
2256:Open Tree of Life
2070:Open Tree of Life
1828:Taxon identifiers
1819:
1818:
1815:
1814:
1798:
1797:
1794:
1793:
1478:
1477:
1366:Threskiornithinae
1253:Threskiornithidae
1183:
1182:
1168:
1167:
1144:
1143:
646:Rasmussen, Pamela
429:inhabits eastern
295:and the northern
266:
265:
195:
91:
16:(Redirected from
2359:
2342:Birds of Uruguay
2317:Birds of Bolivia
2277:
2276:
2264:
2263:
2251:
2250:
2238:
2237:
2225:
2224:
2212:
2211:
2199:
2198:
2186:
2185:
2173:
2172:
2160:
2159:
2158:
2145:
2144:
2143:
2117:
2116:
2104:
2103:
2091:
2090:
2078:
2077:
2065:
2064:
2052:
2051:
2039:
2038:
2026:
2025:
2013:
2012:
2000:
1999:
1987:
1986:
1974:
1973:
1961:
1960:
1948:
1947:
1935:
1934:
1922:
1921:
1909:
1908:
1896:
1895:
1893:D3CAA0B68FC4619C
1883:
1882:
1870:
1869:
1868:
1855:
1854:
1853:
1823:
1810:
1808:
1768:
1718:
1674:
1657:
1551:
1534:
1524:
1514:
1497:
1489:
1375:
1332:
1322:
1312:
1302:
1291:
1281:
1271:
1258:
1231:
1215:
1202:
1189:
1178:
1177:
1105:
1095:
1072:
1062:
1046:Balaenicipitidae
1042:
1014:
998:
985:
972:
909:
902:
895:
886:
879:
878:
876:
875:
846:
837:
826:
825:
807:
792:
791:
789:
788:
765:
742:
741:
739:
738:
715:
666:
665:
663:
661:
638:
632:
631:
610:
604:
603:
601:
599:
594:
564:
340:S. s. sibilatrix
326:are recognised:
293:S. s. sibilatrix
259:Ardea sibilatrix
244:
226:
190:
106:
105:
85:
80:
79:
51:S. s. sibilatrix
44:
35:Whistling heron
32:
21:
2367:
2366:
2362:
2361:
2360:
2358:
2357:
2356:
2322:Birds of Brazil
2287:
2286:
2285:
2280:
2272:
2267:
2259:
2254:
2246:
2241:
2233:
2228:
2220:
2215:
2207:
2202:
2194:
2189:
2181:
2176:
2168:
2163:
2154:
2153:
2148:
2139:
2138:
2133:
2120:
2112:
2107:
2099:
2094:
2086:
2081:
2073:
2068:
2060:
2057:Observation.org
2055:
2047:
2042:
2034:
2029:
2021:
2016:
2008:
2003:
1995:
1990:
1982:
1977:
1969:
1964:
1956:
1951:
1943:
1938:
1930:
1925:
1917:
1912:
1904:
1899:
1891:
1886:
1878:
1873:
1864:
1863:
1858:
1849:
1848:
1843:
1830:
1820:
1811:
1802:
1790:
1759:Tigriornithinae
1753:
1733:
1689:
1579:
1559:
1474:
1360:
1340:
1247:
1224:
1196:
1179:
1172:
1164:
1140:
1120:
1080:
1031:
1007:
979:
966:
928:
913:
883:
882:
873:
871:
861:10.2307/1367367
844:
839:
838:
829:
822:
809:
808:
795:
786:
784:
782:
767:
766:
745:
736:
734:
732:
717:
716:
669:
659:
657:
640:
639:
635:
612:
611:
607:
597:
595:
566:
565:
561:
556:
545:
526:
514:aplomado falcon
506:
501:
405:The subspecies
403:
353:
305:
270:whistling heron
235:
228:
222:
209:
189:
100:
92:
81:
77:
70:
53:
28:
27:Species of bird
23:
22:
15:
12:
11:
5:
2365:
2363:
2355:
2354:
2349:
2344:
2339:
2334:
2329:
2324:
2319:
2314:
2309:
2304:
2299:
2289:
2288:
2282:
2281:
2279:
2278:
2265:
2252:
2239:
2226:
2213:
2200:
2187:
2174:
2161:
2146:
2130:
2128:
2122:
2121:
2119:
2118:
2105:
2092:
2079:
2066:
2053:
2040:
2027:
2014:
2001:
1988:
1975:
1962:
1949:
1936:
1923:
1910:
1897:
1884:
1871:
1856:
1840:
1838:
1832:
1831:
1826:
1817:
1816:
1813:
1812:
1801:
1799:
1796:
1795:
1792:
1791:
1789:
1788:
1781:
1774:
1763:
1761:
1755:
1754:
1752:
1751:
1743:
1741:
1735:
1734:
1732:
1731:
1724:
1714:
1707:
1699:
1697:
1691:
1690:
1688:
1687:
1680:
1670:
1663:
1653:
1646:
1639:
1632:
1625:
1618:
1611:
1604:
1597:
1589:
1587:
1581:
1580:
1578:
1577:
1569:
1567:
1561:
1560:
1558:
1557:
1547:
1540:
1530:
1520:
1510:
1503:
1492:
1486:
1480:
1479:
1476:
1475:
1473:
1472:
1465:
1458:
1451:
1444:
1437:
1430:
1423:
1416:
1409:
1402:
1395:
1388:
1381:
1370:
1368:
1362:
1361:
1359:
1358:
1350:
1348:
1342:
1341:
1339:
1338:
1328:
1318:
1308:
1298:
1287:
1277:
1266:
1264:
1262:incertae sedis
1255:
1249:
1248:
1246:
1245:
1237:
1235:
1233:Xenerodiopidae
1226:
1225:
1223:
1222:
1210:
1208:
1206:incertae sedis
1198:
1197:
1192:
1185:
1184:
1181:
1180:
1171:
1169:
1166:
1165:
1163:
1162:
1161:
1160:
1154:
1152:
1146:
1145:
1142:
1141:
1139:
1138:
1130:
1128:
1122:
1121:
1119:
1118:
1111:
1101:
1090:
1088:
1082:
1081:
1079:
1078:
1068:
1058:
1050:
1048:
1039:
1033:
1032:
1030:
1029:
1021:
1019:
1009:
1008:
1006:
1005:
993:
991:
989:incertae sedis
981:
980:
977:Pelecaniformes
975:
968:
967:
965:
964:
962:Pelecaniformes
958:
952:
946:
940:
933:
930:
929:
914:
912:
911:
904:
897:
889:
881:
880:
855:(3): 255–260.
827:
820:
793:
780:
743:
730:
667:
633:
622:(2): ukad005.
605:
558:
557:
555:
552:
544:
541:
525:
522:
505:
502:
500:
497:
402:
399:
352:
349:
348:
347:
337:
304:
301:
264:
263:
262:
261:
253:
252:
246:
245:
237:
236:
229:
218:
217:
211:
210:
203:
201:
197:
196:
182:
178:
177:
172:
168:
167:
162:
158:
157:
155:Pelecaniformes
152:
148:
147:
142:
138:
137:
132:
128:
127:
122:
118:
117:
112:
108:
107:
94:
93:
75:
72:
71:
66:
63:
62:
46:
45:
37:
36:
26:
24:
14:
13:
10:
9:
6:
4:
3:
2:
2364:
2353:
2350:
2348:
2345:
2343:
2340:
2338:
2335:
2333:
2330:
2328:
2325:
2323:
2320:
2318:
2315:
2313:
2310:
2308:
2305:
2303:
2300:
2298:
2295:
2294:
2292:
2275:
2270:
2266:
2262:
2257:
2253:
2249:
2244:
2240:
2236:
2231:
2227:
2223:
2218:
2214:
2210:
2205:
2201:
2197:
2192:
2188:
2184:
2179:
2175:
2171:
2166:
2162:
2157:
2151:
2147:
2142:
2136:
2132:
2131:
2129:
2127:
2123:
2115:
2110:
2106:
2102:
2097:
2093:
2089:
2084:
2080:
2076:
2071:
2067:
2063:
2058:
2054:
2050:
2045:
2041:
2037:
2032:
2028:
2024:
2019:
2015:
2011:
2006:
2002:
1998:
1993:
1989:
1985:
1980:
1976:
1972:
1967:
1963:
1959:
1954:
1950:
1946:
1941:
1937:
1933:
1928:
1924:
1920:
1915:
1911:
1907:
1902:
1898:
1894:
1889:
1885:
1881:
1876:
1872:
1867:
1861:
1857:
1852:
1846:
1842:
1841:
1839:
1837:
1833:
1829:
1824:
1809:
1807:
1787:
1786:
1782:
1780:
1779:
1775:
1773:
1772:
1765:
1764:
1762:
1760:
1756:
1750:
1749:
1745:
1744:
1742:
1740:
1739:Cochleariinae
1736:
1730:
1729:
1725:
1723:
1722:
1715:
1713:
1712:
1708:
1706:
1705:
1701:
1700:
1698:
1696:
1692:
1686:
1685:
1681:
1679:
1678:
1671:
1669:
1668:
1664:
1662:
1661:
1654:
1652:
1651:
1647:
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83:Least Concern
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33:
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2125:
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1500:Ardeagrandis
1498:
1469:Threskiornis
1467:
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1425:
1418:
1411:
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1315:Rhynchaeites
1313:
1303:
1292:
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1272:
1261:
1240:
1216:
1205:
1133:
1113:
1108:Miopelecanus
1106:
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1073:
1063:
1053:
1024:
999:
988:
956:Aequornithes
872:. Retrieved
852:
848:
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770:
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720:
660:19 September
658:. Retrieved
653:
636:
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582:
576:
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546:
530:
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512:(as from an
507:
489:cattle egret
474:
467:
457:. It makes
426:
407:fostersmithi
406:
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396:
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382:
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373:fostersmithi
372:
357:
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223:
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204:
185:
184:
50:
29:
2204:iNaturalist
2150:Wikispecies
2044:Neotropical
1979:iNaturalist
1860:Wikispecies
1748:Cochlearius
1650:Pilherodius
1507:Calherodius
1462:Theristicus
1455:Thaumatibis
1346:Plataleinae
1242:Xenerodiops
1159:See below ↓
1098:Eopelecanus
1086:Pelecanidae
1055:Balaeniceps
1016:Torotigidae
642:Gill, Frank
616:Ornithology
598:11 November
518:dragonflies
481:agriculture
369:preen gland
363:typical of
361:powder down
351:Description
171:Subfamily:
2291:Categories
2109:Xeno-canto
1778:Tigriornis
1771:Taphophoyx
1711:Ixobrychus
1695:Botaurinae
1684:Zonerodius
1643:Nyctanassa
1636:Nycticorax
1629:Gorsachius
1554:Proardeola
1413:Lophotibis
1406:Geronticus
1385:Bostrychia
1274:Gerandibis
1218:Ardeacites
1075:Paludiavis
915:Genera of
874:2007-04-03
787:2007-04-01
737:2007-04-01
554:References
537:eucalyptus
533:araucarias
427:sibilatrix
324:subspecies
2141:Q15882571
1785:Tigrisoma
1677:Zeltornis
1615:Butorides
1565:Agamiinae
1544:Oroanassa
1537:Nyctisoma
1517:Eoceornis
1448:Pseudibis
1399:Eudocimus
1378:Apteribis
1335:Xenicibis
1325:Vadaravis
1115:Pelecanus
1065:Goliathia
1001:Cladornis
936:Kingdom:
485:Old World
479:and some
451:Argentina
423:Venezuela
417:basin of
383:kleeer-er
334:Friedmann
200:Species:
121:Kingdom:
115:Eukaryota
2302:Ardeidae
2135:Wikidata
2023:22696913
1997:10762615
1906:22696913
1901:BirdLife
1845:Wikidata
1728:Zebrilus
1721:Pikaihao
1704:Botaurus
1660:Proardea
1608:Bubulcus
1585:Ardeinae
1484:Ardeidae
1441:Plegadis
1434:Phimosus
1427:Nipponia
1392:Cercibis
1355:Platalea
1305:Protibis
1294:Mopsitta
1126:Scopidae
1037:Pelecani
944:Chordata
942:Phylum:
938:Animalia
925:pelicans
524:Breeding
499:Behavior
491:and the
435:Paraguay
419:Colombia
413:and the
392:quah-h-h
344:Temminck
303:Taxonomy
250:Synonyms
232:Temminck
175:Ardeinae
165:Ardeidae
161:Family:
135:Chordata
131:Phylum:
125:Animalia
111:Domain:
88:IUCN 3.1
56:Pantanal
2222:1212182
2196:2480920
2156:Syrigma
2126:Syrigma
2049:whiher1
1971:2480921
1958:whiher1
1932:whiher1
1888:Avibase
1851:Q218549
1667:Syrigma
1622:Egretta
1601:Ardeola
1026:Torotix
960:Order:
954:Clade:
948:Class:
869:1367367
504:Feeding
470:savanna
443:Uruguay
431:Bolivia
415:Orinoco
288:Syrigma
234:, 1824)
192:Ridgway
186:Syrigma
181:Genus:
151:Order:
141:Class:
86: (
18:Syrigma
2307:Herons
2274:289763
2261:892217
2248:110686
2235:174870
2088:401701
2075:892218
2036:110687
2010:174871
1574:Agamia
1527:Matuku
1284:Milnea
1135:Scopus
921:herons
867:
849:Condor
818:
778:
728:
721:Herons
510:pirate
487:: the
455:Brazil
439:Brazil
411:Llanos
365:herons
194:, 1878
60:Brazil
49:Adult
2217:IRMNG
2170:69443
2101:17243
2062:73446
1992:IRMNG
1953:eBird
1945:542DQ
1919:69444
1594:Ardea
1194:Ardei
1150:Ardei
865:JSTOR
845:(PDF)
447:Chile
284:genus
2243:NCBI
2230:ITIS
2209:5055
2191:GBIF
2183:7RJL
2165:BOLD
2031:NCBI
2018:IUCN
2005:ITIS
1984:5056
1966:GBIF
1914:BOLD
950:Aves
917:ibis
816:ISBN
776:ISBN
726:ISBN
662:2023
600:2021
583:2016
421:and
322:Two
268:The
145:Aves
54:The
2178:CoL
2096:TSA
1940:CoL
1927:BOW
1875:ADW
857:doi
624:doi
620:140
587:doi
319:).
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Text is available under the Creative Commons Attribution-ShareAlike License. Additional terms may apply.
