{"id":11450,"date":"2019-02-25T19:05:20","date_gmt":"2019-02-26T00:05:20","guid":{"rendered":"http:\/\/birdaz.com\/blog\/?page_id=11450"},"modified":"2019-02-25T19:05:22","modified_gmt":"2019-02-26T00:05:22","slug":"socorro-towhee-pipilo-maculatus-socorroensis","status":"publish","type":"page","link":"http:\/\/birdaz.com\/blog\/socorro-towhee-pipilo-maculatus-socorroensis\/","title":{"rendered":"Socorro Towhee, Pipilo maculatus socorroensis"},"content":{"rendered":"\n

Original\u00a0description:\u00a0<\/strong>Pipilo\u00a0socorroensis<\/em>\u00a0Grayson\u00a01867<\/p>\n\n\n\n

eBird range map<\/a><\/strong><\/p>\n\n\n\n

Taxonomic\u00a0history\u00a0at\u00a0Avibase<\/a><\/strong><\/p>\n\n\n\n

Taxonomic\u00a0history\u00a0in\u00a0<\/strong>AOU\/AOS Check-list<\/em><\/strong><\/a>\u00a0<\/strong><\/p>\n\n\n\n

AOU 6 (1983): Rufous-sided Towhee, Pipilo erythrophthalmus socorroensis<\/em><\/p>\n\n\n\n

AOU 7 (1998): Spotted Towhee, Pipilo maculatus socorroensis<\/em><\/p>\n\n\n\n

IUCN Conservation\u00a0Status<\/a>: <\/strong>Endangered<\/p>\n\n\n\n

In the nineteenth century, visitors to Socorro found this bird \u201cabundant\u201d or \u201cvery common\u201d across the island. In the 1990s, it was still said to be common to fairly common, and has recently been reported as common in forested areas at the island\u2019s higher elevations.\u00a0<\/p>\n\n\n\n

Like many other oceanic islands, Socorro has suffered from the introduction of non-native vertebrates including sheep, housecats, lizards, and rodents. Grayson himself had abandoned a pair of domestic hogs on his first visit to the island in 1865, and was \u201cgratified\u201d in 1867 to find the sow \u201cvery fat, and far advanced in pregnancy.\u201d By 2010, thanks to eradication efforts, the only invasive introduced mammals remaining on Socorro were the housecat and the house mouse. The immediate impetus for habitat restoration on the island is the scheme to re-introduce the severely endangered Socorro Dove (a species, now extinct in the wild, named in memory of Grayson\u2019s son), but the removal of introduced predators and grazing ruminants is likely to be benefit native ground-feeding birds as well.H<\/strong><\/p>\n\n\n\n

Behavior:\u00a0<\/strong>Where other Spotted Towhees are shy to the point of furtiveness, almost invariably keeping close to deep, dark cover, Socorro Towhees have been described from the very beginning as notably bold. Grayson found them \u201cas tame as domestic fowls,\u201d easily attracted to crumbs and basins of water; on his visit to Socorro a generation later, Anthony considered them “uniformly confiding, and often half a dozen would congregate within a few feet of a person, silently inspecting him with an air of trustful curiosity quite foreign to other species of the genus.”<\/p>\n\n\n\n

\tLike other large sparrows, Socorro Towhees eat both seeds and insects, scratching and kicking through dried leaves and grass in search of prey. <\/p>\n\n\n\n

Voice:\u00a0<\/strong>The calls of the Socorro Towhee include a thin, hissing tzee<\/em> and a harsh, rising and falling tzhurrEEa<\/em>. A clearer, more musical doREE<\/em> recalls the contact notes of some Eastern Towhees from the southern part of that species\u2019 range. <\/p>\n\n\n\n

\tThe Socorro Towhee\u2019s songs, like those of other Pipilo <\/em>towhees, are variable. The song typically begins with one to three call-like notes, harsh or sweet, and concludes with a louder, higher-pitched buzz or rattle.<\/p>\n\n\n\n

Detailed\u00a0description\u00a0and\u00a0measurements\u00a0<\/strong>drawn\u00a0from\u00a0standard\u00a0reference\u00a0works<\/em><\/p>\n\n\n\n

Adult: <\/strong>Tail feathers, upper tail coverts, rump, back, head, throat, and upper breast olive-brown, warmer brown in male. Outer two pairs of tail feathers with small oval white spot at tip of inner web. Scapulars with small white spot at tips. Primaries and secondaries dark brown with faint gray edges. Tertials blackish brown tipped with white. Greater and median coverts blackish brown with white spot at tip, forming two conspicuous white wing bars.\u00a0<\/p>\n\n\n\n

Under tail coverts and vent pale rust. Center of belly and lower breast white, flanks and lower breast sides bright rust. Variable white spot on center of throat.\u00a0<\/p>\n\n\n\n

Length<\/strong> 147-179 mm (5.8-7.0 inches)<\/p>\n\n\n\n

Wing chord<\/strong> 64-74 mm (2.5-2.9 inches)<\/p>\n\n\n\n

Tail<\/strong> 70-81 mm (2.8-3.2 inches)<\/p>\n\n\n\n

W<\/strong>:T 0.95<\/p>\n","protected":false},"excerpt":{"rendered":"

Original\u00a0description:\u00a0Pipilo\u00a0socorroensis\u00a0Grayson\u00a01867 eBird range map Taxonomic\u00a0history\u00a0at\u00a0Avibase Taxonomic\u00a0history\u00a0in\u00a0AOU\/AOS Check-list\u00a0 AOU 6 (1983): Rufous-sided Towhee, Pipilo erythrophthalmus socorroensis AOU 7 (1998): Spotted Towhee, Pipilo maculatus socorroensis IUCN Conservation\u00a0Status: Endangered In the nineteenth century, visitors to Socorro found this bird \u201cabundant\u201d or \u201cvery common\u201d across the island. In the 1990s, it was still said to be common to fairly … <\/p>\n

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