دیدومَک (نام علمی: Vanellus indicus یا Hoplopterus indicus) پرندهای با منقار قرمز و پاهای زرد که از حشرات و سایر بی مهرگان تغذیه میکند و بصورت جفت جفت مشاهده میشود.
دیدومک پرندهای پر سروصداست که در سکوت شب، صدایش حتی از فاصلهٔ یک کیلومتری هم شنیده میشود و حدود ۳۳ سانتیمتر طول دارد و همانند سایر آبچلیک سانان در حول و حوش آبها به سر میبرد.
هنگامیکه فرد انسانی به محل نشستن موقت پرنده نزدیک میشود شروع به با دور زدن مکرر به سر آدم و سروصدای زیاد میکند.
دیدومک در فرهنگ عامهٔ جنوب ایران[ویرایش]
در فرهنگ عامهٔ مردم جنوب از جمله کوخرد پرنده أی نسبتاً شوم بودهاست. عدهای میگویند گذشتگان هر گاه شبها صدای «دیدومک» را میشنیدند نشانهای از نحسی و بدشگونی بود و باید مقداری آب بر روی زمین میریختند و عدهای دیگر میگویند شنیدن صدای «دیدومک» (تِتیوَک) در شب نشانهای است از تولد نوزادی در حوالی. اما حالا که کسی اینها را باور ندارد. فقط هنگامی که به «دیدومک» نزدیک میشویم میتوان صدای آن را برای هشدار به سایرین بشنویم یعنی نوعی اعلام وجود غریبهای است در نزدیکی.
در تابستانهایی گرم، گاه شبهایی آنقدر شرجی میشود که قدرت نفس کشیدن را از انسان سلب میکند، و گاه آنقدر خشک با چاشنی تشباد که حتی شبها هم پوست را کباب میکند، ولی در هر دو حالت در تاریکی شب و از روی کپر و سجم صدای «دیدومک» را میشد از دریاچهٔ لمبیر ملکی و ساحل رودخانه مهران به وضوح شنیده شود. گهگاهی صدای تِ تی وَک آنها را دقیقاً از بالای سر و با فاصلهای اندک در تاریکی شب احساس میشود کرد. شباهت نام این پرنده در فارسی و لهجه کوخردی جالب است و ظاهراً هر دو از صدای آن الهام گرفته شدهاست، عدهای آن را «تِ تی وَک» و عدهای دیگر «دیی دو مَک» شنیدهاند. پرندهای بومی جنوب ایران و هرمزگان است، و به گویش محلی (کوخردی) آن را «تِتیوَک» (Tetivak) گویند. به لهجه لری در مناطق کهگیلیویه به آن «تی تی قلندر» و در گویش جنوب استان بوشهر به آن «تی تو وَنگ» میگویند.
The red-wattled lapwing (Vanellus indicus) is a lapwing or large plover, a wader in the family Charadriidae. Like other lapwings they are ground birds that are incapable of perching. Their characteristic loud alarm calls are indicators of human or animal movements and the sounds have been variously rendered as did he do it or pity to do it leading to the colloquial name of did-he-do-it bird. Usually seen in pairs or small groups and usually not far from water they sometimes form large aggregations in the non-breeding season (winter). They nest in a ground scrape laying three to four camouflaged eggs. Adults near the nest fly around, diving at potential predators while calling noisily. The cryptically patterned chicks hatch and immediately follow their parents to feed, hiding by lying low on the ground or in the grass when threatened.
The red-wattled lapwing was described by the French polymath Georges-Louis Leclerc, Comte de Buffon in his Histoire Naturelle des Oiseaux in 1781. The bird was also illustrated in a hand-coloured plate engraved by François-Nicolas Martinet in the Planches Enluminées D'Histoire Naturelle which was produced under the supervision of Edme-Louis Daubenton to accompany Buffon's text. Neither the plate caption nor Buffon's description included a scientific name but in 1783 the Dutch naturalist Pieter Boddaert coined the binomial name Tringa indica in his catalogue of the Planche Enluminées. The type locality is Goa in western India. The current genus Vanellus was erected by the French zoologist Mathurin Jacques Brisson in 1760. Vanellus is the Medieval Latin for a "lapwing". It is a diminutive of the Latin vanus meaning "winnowing" or "fan". The specific epithet indicus is the Latin for "India".
Red-wattled lapwings are large waders, about 35 cm long. The wings and back are light brown with a purple to green sheen, but the head, a bib on the front and back of the neck are black. Prominently white patch runs between these two colours, from belly and tail, flanking the neck to the sides of crown. Short tail is tipped black. A red fleshy wattle in front of each eye, black-tipped red bill, and the long legs are yellow. In flight, prominent white wing bars formed by the white on the secondary coverts.
Race aigneri is slightly paler and larger than the nominate race and is found in Turkey, Iran, Iraq, Afghanistan and the Indus valley. The nominate race is found all over India. The Sri Lankan race lankae is smaller and dark while atronuchalis the race in north-eastern India and eastern Bangladesh has a white cheek surrounded by black.
Males and females are similar in plumage but males have a 5% longer wing and tend to have a longer carpal spur. The length of the birds is 320-350mm, wing of 208-247mm with the nominate averaging 223mm, Sri Lanka 217mm. The Bill is 31-36mm and tarsus of 70-83mm. Tail length is 104-128mm.
It usually keeps in pairs or trios in well-watered open country, ploughed fields, grazing land, and margins and dry beds of tanks and puddles. They occasionally form large flocks, ranging from 26 to 200 birds. It is also found in forest clearings around rain-filled depressions. It runs about in short spurts and dips forward obliquely (with unflexed legs) to pick up food in a typical plover manner. They are said to feed at night being especially active around the full moon. Is uncannily and ceaselessly vigilant, day or night, and is the first to detect intrusions and raise an alarm, and was therefore considered a nuisance by hunters. Flight rather slow, with deliberate flaps, but capable of remarkable agility when defending nest or being hunted by a hawk.
Its striking appearance is supplemented by its noisy nature, with a loud and scolding did-he-do-it call, often uttered at night.
The local names are mainly onomatopoeic in origin and include titeeri (Hindi), tittibha (Kannada), tateehar (Sindhi), titodi (Gujarati), hatatut (Kashmiri), balighora (Assamese), yennappa chitawa (Telugu), aal-kaati (Tamil, meaning "human indicator").
It breeds from West Asia (Iraq, SW Iran, Persian Gulf) eastwards across South Asia (Baluchistan, Afghanistan, Pakistan, the entire Indian subcontinent up to Kanyakumari and up to 1800m in Kashmir/Nepal), with another sub-species further east in Southeast Asia. May migrate altitudinally in spring and autumn (e.g. in N. Baluchistan or NW Pakistan), and spreads out widely in the monsoons on creation of requisite habitats, but by and large the populations are resident.
This species is declining in its western range, but is abundant in much of South Asia, being seen at almost any wetland habitat in its range.
Behaviour and ecology
The breeding season is mainly March to August. The courtship involves the male puffing its feathers and pointing its beak upwards. The male then shuffles around the female. Several males may display to females and they may be close together. The eggs are laid in a ground scrape or depression sometimes fringed with pebbles, goat or hare droppings. About 3–4 black-blotched buff eggs shaped a bit like a peg-top (pyriform), 42x30 mm on average. Nests are difficult to find since the eggs are cryptically coloured and usually matches the ground pattern. In residential areas, they sometimes take to nesting on roof-tops. They have been recorded nesting on the stones between the rails of a railway track, the adult leaving the nest when trains passed. Nests that have been threatened by agricultural operations have been manually translocated by gradually shifting the eggs. When nesting they will attempt to dive bomb or distract potential predators. Both the male and female incubate the eggs and divert predators using distraction displays or flash their wings to deter any herbivores that threaten the nest. Males appear to relieve females incubating at the nest particularly towards the hot part of noon. The eggs hatch in 28 to 30 days. The reproductive success is about 40%. Egg mortality is high (~43%) due to predation by mongooses, crows and kites. Chicks had a lower mortality (8.3%) and their survival improved after the first week.
They bathe in pools of water when available and will often spend time on preening when leaving the nest or after copulation. They sometimes rest on the ground with the tarsi laid flat on the ground and at other times may rest on one leg.
The diet of the lapwing includes a range of insects, snails and other invertebrates, mostly picked from the ground. They may also feed on some grains. They feed mainly during the day but they may also feed at night. They may sometimes make use of the legs to disturb insect prey.
In parts of India, a local belief is that the bird sleeps on its back with the legs upwards and an associated Hindi metaphor Tithiri se asman thama jayega ("can the lapwing support the heavens?") is used when referring to persons undertaking tasks beyond their ability or strength.
In parts of Rajasthan it is believed that the laying of eggs by the lapwing on high ground was an indication of good rains to come. The eggs are known to be collected by practitioners of folk medicine.