PAINTED-SNIPES Region 1 Migrants 0 Residents 1 Endemics 0/0 Family Rostratulidae Vagrants 0 Restricted 0
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World 3 Genera 1 PAINTED-SNIPES Region 1 Migrants 0 Residents 1 Endemics 0/0 Family Rostratulidae Vagrants 0 Restricted 0 Unexpectedly encountering a painted-snipe is always 1.5 a special birding moment. Not only are these among A vu - HU vu - HU vu - HU the most strikingly patterned waders, as their name 1.0 implies, but painted-snipes can also be exceptionally 0.5 difficult to see. They are secretive, skulking, and partly crepuscular, spending much of the day motionlessly kHz hunched among thick aquatic vegetation where their S 1s 2s 3s 4s complex markings provide them excellent disruptive 1.5 camouflage. In addition, their occurrence is erratic B VU'ku VU'ku VU'ku VU'ku... and unpredictable, and they may appear virtually 1.0 overnight after a big storm, only to disappear into thin air again, sometimes for years. 0.5 The Greater Painted-snipe is widespread across kHz much of sub-Saharan Africa, Madagascar and Asia. S 1s 2s 3s 4s Consequently the species is not of conservation con- cern at the global scale. In South Africa it is classified Greater Painted-snipe song. Using her oesophageal crop as as regionally Near Threatened due to perceived popu- a resonance chamber, the produces a long series of mellow, low-pitched hoots used as advertisement calls. Typical sequences lation reductions, particularly in the small, isolated W start with 5-6 lower vu-HU notes (A) like the sound produced by Cape population, plus ongoing degradation of wet- blowing over the mouth of an empty bottle. The emphasis is on lands. [Afrikaans: Goudsnip]. the second syllable. This introductory sequence is immediately followed by up to 50 higher, sharper, hollow VU'ku notes with the emphasis on the first syllable (B). General Characteristics Painted-snipes have comparatively broad, short and give them a characteristic hunched carriage. They blunt-tipped flight feathers; consequently their wings run with the head held low. Their legs are relatively are notably shorter and less pointed than most waders' long, with a stout tarsus and long, slender, flexible, and their flight is correspondingly weaker. They are unwebbed toes. The long middle toe is 95% as long often first seen when flushed close underfoot, flying as the tarsus; relative to the middle toe, the outer is heavily (with their long feet dangling like a crake's) approximately 83%, the inner 73% and the longish for a short distance before flopping unceremoniously hind-toe 31% as long. There are transverse scutes on back into the vegetation. Nevertheless, they are highly both the front and rear surfaces of the tarsus. mobile, and are quick to discover newly inundated Tactile probing is used to find food in mud or dirty pans or floodplains after big storms, even in isolated, water, but painted-snipes also locate prey visually, otherwise arid areas. and they have good eyesight. Their eyes are very Like jacanas, they have only 10 primaries, lacking large and bulging, and are set far forward on the face the tiny 11th of most wader genera. They have about for binocular vision (in contrast to the true snipes, in 15 secondaries and, unusually, 7 pairs of broad, short which the eyes are set far back in the skull). Thin black tail feathers. Painted-snipes have short necks, which 'eyelashes' surround the bare skin orbital ring. During the br. season, folds of subcutaneous fat develop in the neck of the , which allow for more movement of her bizarrely elongated and convoluted Genus tracheae. The long tracheal loop extends below the Rostratula sternum, lying atop the pectoral muscles. A calling GREATER inflates her trachea to act as a resonance chamber to PAINTED-SNIPE produce a deeper, more powerful sound; her song is audible for well over a kilometre. There is no seasonal variation, but the sexes differ greatly, the larger being more boldly marked (as in other polyandrous species). Given the unpredictable ephemeral nature of their habitat, moult is not well synchronised and is highly variable. Juveniles are very similar to ad. ; after the post-juv. moult immature birds can be aged, with difficulty, by retained juv. Genus AFRICAN SNIPE coverts. This is considerably easier in young in Gallinago (to compare) which the retained -like juv. coverts contrast with the new, plainer, greenish -type coverts. 100 ROSTRATULIDAE 4_PSnipe and Jacanas_x4.indd 100 2016/11/06 8:47 PM ADULT AND ADULT ADULT JUVENILE remiges have PRIMARY MEDIAN COVERT MEDIAN COVERT MEDIAN COVERT black on base of outer webs wing looks uniformly dark grey, scribbled very like adult striking orange brown from a base normally but... spots, clearly distance hidden visible in flight grey more 'oily' green extensive and sheen each spot or gorgeous: thus visible bar framed narrow, paired, shiny in black parallel golden 'eyes' bars only 1 pair of spots feathers short, broad, round; dark gold slightly paler wing shaped markings pearl- background duller gold more like a white towards feather itself rallid's (or small feather tip, esp. on no pale tip creamy tip a bit smaller owl's) in flight inner secondaries than adult's 'Painted' feathers. Adult are easily sexed by their almost unmarked coppery green wing coverts, but adult and juveniles are only separable with difficulty at close range. Best is to look at the median coverts. Origin of Names the painted-snipes are in an entirely different Both the English Painted-snipe and the Afrikaans family (Rostratulidae) than the true snipes (family Goudsnip ('gold snipe') refer to the exquisite plumage Scolopacidae, genus Gallinago). Although there is a of this species. For details on the etymology of the superficial resemblance between painted- and true word snipe, see p. 174. The generic Rostratula is the snipes, the former is actually sister to the jacanas diminutive form (-ula) of the Latin rostrata ('beaked'), (family Jacanidae) instead. Several unusual traits are so 'small-beaked'; this is presumably because the bill is shared by painted-snipes and jacanas, including a shorter than those of the Gallinago snipes. The specific serially polyandrous breeding system, in which are epithet benghalensis refers to the type locality of the larger than and take a dominant role in territory species, Bengal (Bangladesh-India). establishment and mate-attraction, but usually Interestingly, when Linnaeus first named the spe- forsake the once the eggs are laid, in search of a cies in 1758, he allocated it to the rail genus Rallus, new mate. Furthermore, both families only have 10 in reflection of the similarities in build, behaviour, primaries (instead of the usual 11) and have similar habitat and voice between these unrelated families. banded downy chicks. Both also have skeletal features The recently split Australian Painted-snipe R. australis, recalling those of rallids rather than other waders. was originally placed in Rhynchaea (meaning 'big- The Rostratulidae is one of the most species-poor nose'). Finally, the South American Painted-snipe is wader families. Until recently, all birds in sub-Saharan the sole member of the genus Nycticryphes, the Greek Africa, Madagascar, India, Asia, Indonesia and Aus- nuktos (night) and kruphe (secret). tralia were considered to be a single very widespread species, R. benghalensis. However, based on differences Classification and Relationships in mitochondrial DNA, biometrics, plumage (minor) It may come as a surprise that the painted-snipes and possibly voice, birds from Australia are now, are related to other snipes only in name. Indeed, tentatively, split as a separate species, Australian Painted-snipe R. australis. The only other member of the family is the South American Painted-snipe Pedionomidae (Plains-wanderer) which inhabits the swamps and wet grasslands of Thinocoridae (seedsnipes) S Brazil, Paraguay, Uruguay and Argentina. It is Jacanidae (jacanas) deemed to be sufficiently different to occupy a whole Rostratulidae (painted-snipes) other genus, Nycticryphes. In addition to lacking sexual Rostratula ('Old World' P-snipes) dimorphism, this species differs in being smaller and Nycticryphes (S American P-snipe) darker; having a more pronounced curve to the bill- Scolopacidae tip; in its narrow, brown, graduated tail feathers; and Numeniinae (whimbrels, curlews) Limosinae (godwits) in having webbing at the bases of its toes. Calidrinae (turnstones, sandpipers) Although only 3 species remain extant, the fossil Tringinae (shanks, phalaropes) record proves that painted-snipes probed the pre- Scolopacinae (true snipes) historic marshes as long ago as the early Miocene (23- 16 Ma). At least 2 species are now extinct: the small Classification of painted-snipes. The Rostratulidae R. pulia from Czech Republic (early Miocene), and our family is very closely allied to the jacanas, but only own R. minator from Langebaanweg, South Africa distantly related to the true snipes (p. 172). (early Pliocene, 5.3-3.6 Ma). PAINTED-SNIPES 101 4_PSnipe and Jacanas_x4.indd 101 2016/11/06 8:47 PM Biology bill looks short, A variety of aquatic and terrestrial invertebrates are red back deep and broad enclosed in eaten, including insects (bugs, beetles, grasshoppers, black crickets), centipedes, freshwater snails, earthworms, crustaceans and probably many other groups. Small bold parallel bands fish, tadpoles or froglets are probably also taken on dark stripe occasion. Grass seeds are important, including rice in through eye areas where the species inhabits paddies. Polyandry appears to be the principal breeding golden wing system in painted-snipes, as in jacanas and button- spots soon begin quails: the larger typically pairs with 2-4 per year, to appear departing as soon as she has laid the clutch. She may lay a new clutch within 12 days of completing the exceedingly cute, like previous one. The builds the nest, incubates the all wader hatchlings, with awkwardly big eggs and raises the chicks, remaining with them for legs and feet 1-2 months after fledging.