[{"data":1,"prerenderedAt":214},["ShallowReactive",2],{"glossary_en:\u002Fslovar\u002Fvyvodkovye-i-ptencovye-ptitsy":3,"alt-locale:glossary_en:\u002Fslovar\u002Fvyvodkovye-i-ptencovye-ptitsy":113,"section-listing:glossary_en:\u002Fslovar":114,"section-listing:disabled":208,"related-covers:en:\u002Fslovar\u002Fpuhovoi-ptenec|\u002Fslovar\u002Fgnezdovanie|\u002Fvidy-ptic\u002Fvidy\u002Fkryakva":209},{"id":4,"title":5,"body":6,"coverImage":76,"description":77,"extension":78,"faq":79,"imagePrompt":86,"meta":87,"navigation":88,"order":89,"pageType":90,"path":91,"publishedAt":92,"readingMinutes":93,"relatedLinks":94,"seo":107,"sitemap":110,"stem":111,"tags":89,"updatedAt":89,"__hash__":112},"glossary_en\u002Fslovar\u002Fvyvodkovye-i-ptencovye-ptitsy.md","Precocial and Altricial Birds",{"type":7,"value":8,"toc":70},"minimark",[9,14,44,47,51,67],[10,11,13],"h2",{"id":12},"two-strategies-for-hatching","Two strategies for hatching",[15,16,17,18,22,23,26,27,29,30,35,36,38,39,43],"p",{},"Bird species fall along a spectrum of hatchling development, with two ends usually described as ",[19,20,21],"strong",{},"precocial"," and ",[19,24,25],{},"altricial",". A ",[19,28,21],{}," chick, like a ",[31,32,34],"a",{"href":33},"\u002Fen\u002Fvidy-ptic\u002Fvidy\u002Fkryakva","mallard"," duckling, hatches covered in down, with its eyes open, able to walk, swim, and find its own food within hours of hatching — the mother's main role is leading the brood to food and warning of danger, not feeding chicks directly. An ",[19,37,25],{}," chick, like a nestling ",[31,40,42],{"href":41},"\u002Fen\u002Fvidy-ptic\u002Fvidy\u002Fbolshaya-sinitsa","great tit",", hatches blind, essentially naked, and entirely helpless, unable to leave the nest or feed itself, depending completely on parents bringing food to the nest for one to several weeks.",[15,45,46],{},"Most songbirds are altricial, while most waterfowl, gamebirds, and many shorebirds are precocial — a split that lines up closely with nest type and site. Ground- and water-nesting species with chicks exposed to predators from day one benefit from hatching mobile and camouflaged rather than spending vulnerable weeks confined to a fixed nest location.",[10,48,50],{"id":49},"where-species-fall-in-between","Where species fall in between",[15,52,53,54,57,58,61,62,66],{},"Few species sit at the absolute extremes, and ornithologists recognize intermediate categories. ",[19,55,56],{},"Semi-precocial"," chicks, seen in many gulls, hatch downy and able to walk but stay near the nest and are still fed by parents. ",[19,59,60],{},"Semi-altricial"," chicks, typical of herons and raptors, hatch with eyes open and some down but remain nest-bound and dependent on being fed, much like fully altricial species. The ",[31,63,65],{"href":64},"\u002Fen\u002Fvidy-ptic\u002Fvidy\u002Fseraya-tsaplya","grey heron"," is a semi-altricial example: its chicks hatch with a covering of down and open eyes but cannot leave the nest platform or feed themselves for weeks.",[15,68,69],{},"Understanding where a species falls on this spectrum explains a great deal about its breeding biology at a glance — precocial species generally lay larger clutches and invest less in individual chick care, while altricial species invest heavily in fewer, more helpless young.",{"title":71,"searchDepth":72,"depth":72,"links":73},"",2,[74,75],{"id":12,"depth":72,"text":13},{"id":49,"depth":72,"text":50},"\u002Fimages\u002Fslovar\u002Fvyvodkovye-i-ptencovye-ptitsy.png","Precocial chicks hatch mobile, feathered, and able to feed themselves within hours; altricial chicks hatch blind, naked, and entirely dependent on their parents.","md",[80,83],{"q":81,"a":82},"Which strategy is more common among songbirds?","Altricial. Nearly all perching birds — including tits, finches, thrushes, and crows — hatch blind, featherless, and helpless, remaining in the nest for one to several weeks while both parents (in most species) bring food constantly until the chicks fledge.",{"q":84,"a":85},"Why would a species hatch helpless chicks at all, if mobile chicks seem safer?","Altricial development lets a hatchling invest less energy into the egg itself and grow faster after hatching by being fed continuously, which suits species like songbirds that nest in relatively safe, concealed, or elevated sites. Precocial development suits species like ducks and shorebirds that nest in the open or near water, where chicks that can walk and feed themselves within hours have a much better chance of avoiding predators from day one.","Photorealistic wildlife photo, a female Anas platyrhynchos mallard leading a line of seven downy yellow-and-brown ducklings across calm pond water at first light, ripples trailing behind each duckling, soft-focus reeds along the far bank, gentle mist rising off the water, warm early morning light from camera-right, 16:9",{},true,null,"glossary","\u002Fslovar\u002Fvyvodkovye-i-ptencovye-ptitsy","14.07.2026",1,[95,99,103],{"label":96,"path":97,"description":98},"Downy chick","\u002Fslovar\u002Fpuhovoi-ptenec","The soft first feather covering of a hatchling",{"label":100,"path":101,"description":102},"Nesting","\u002Fslovar\u002Fgnezdovanie","The full process of raising chicks to independence",{"label":104,"path":105,"description":106},"Mallard","\u002Fvidy-ptic\u002Fvidy\u002Fkryakva","A classic precocial species",{"title":108,"description":109},"Precocial vs. Altricial Birds — hatchling development explained","The difference between precocial chicks (mobile and self-feeding at hatching) and altricial chicks (helpless and nest-bound), with examples.",{"loc":91},"slovar\u002Fvyvodkovye-i-ptencovye-ptitsy","CVO-Pm87DD1u7f0RVgR0ZZHs3xirhK9Q8mI8IpXzqXg",{"ru":88,"es":88},[115,120,125,130,135,140,145,149,154,159,164,169,174,179,184,187,192,197,198,203],{"title":116,"description":117,"path":118,"coverImage":119,"publishedAt":92,"order":89},"Bird Feeder","A bird feeder provides supplementary food, most valuably in winter, and lets birdwatchers observe species up close — but it needs regular cleaning to avoid spreading disease.","\u002Fslovar\u002Fkormushka-dlya-ptic","\u002Fimages\u002Fslovar\u002Fkormushka-dlya-ptic.png",{"title":121,"description":122,"path":123,"coverImage":124,"publishedAt":92,"order":89},"Bird Migration","Bird migration is the regular, seasonal movement of birds between breeding and non-breeding ranges — driven by food availability and daylight, not simply cold weather.","\u002Fslovar\u002Fmigraciya-ptic","\u002Fimages\u002Fslovar\u002Fmigraciya-ptic.png",{"title":126,"description":127,"path":128,"coverImage":129,"publishedAt":92,"order":89},"Bird Ringing","Bird ringing (banding) attaches a small, uniquely numbered metal or plastic ring to a bird's leg, allowing individuals to be tracked across recaptures and sightings.","\u002Fslovar\u002Fkolcevanie-ptic","\u002Fimages\u002Fslovar\u002Fkolcevanie-ptic.png",{"title":131,"description":132,"path":133,"coverImage":134,"publishedAt":92,"order":89},"Bird of Prey (Raptor)","A bird of prey, or raptor, hunts live vertebrate prey using strong grasping feet and a hooked bill — a functional grouping spanning several unrelated families, including falcons, hawks, and owls.","\u002Fslovar\u002Fpernatyi-hishchnik","\u002Fimages\u002Fslovar\u002Fpernatyi-hishchnik.png",{"title":136,"description":137,"path":138,"coverImage":139,"publishedAt":92,"order":89},"Birdwatching","Birdwatching is the recreational observation and identification of wild birds, ranging from casual garden watching to structured trips to specific sites and seasons.","\u002Fslovar\u002Fbirdwatching","\u002Fimages\u002Fslovar\u002Fbirdwatching.png",{"title":141,"description":142,"path":143,"coverImage":144,"publishedAt":92,"order":89},"Conservation Status of Birds (LC\u002FNT\u002FVU\u002FEN\u002FCR)","Conservation status is a standardized IUCN category — from Least Concern to Extinct — measuring how close a species is to disappearing across its entire range.","\u002Fslovar\u002Fohrannyi-status-ptic","\u002Fimages\u002Fslovar\u002Fohrannyi-status-ptic.png",{"title":146,"description":147,"path":97,"coverImage":148,"publishedAt":92,"order":89},"Downy Chick","A downy chick is a hatchling covered in soft, fluffy natal down rather than true feathers — its exact appearance and mobility depend on whether the species is precocial or altricial.","\u002Fimages\u002Fslovar\u002Fpuhovoi-ptenec.png",{"title":150,"description":151,"path":152,"coverImage":153,"publishedAt":92,"order":89},"Egg Clutch","A clutch is the full set of eggs a female bird lays in a single nesting attempt — its size varies by species from a single egg to over a dozen.","\u002Fslovar\u002Fkladka-yaic","\u002Fimages\u002Fslovar\u002Fkladka-yaic.png",{"title":155,"description":156,"path":157,"coverImage":158,"publishedAt":92,"order":89},"Egg Incubation","Incubation is the process of keeping eggs at a stable, warm temperature until they hatch, usually by direct body contact through a bare, blood-vessel-rich brood patch.","\u002Fslovar\u002Finkubaciya-yaic","\u002Fimages\u002Fslovar\u002Finkubaciya-yaic.png",{"title":160,"description":161,"path":162,"coverImage":163,"publishedAt":92,"order":89},"Endemic Species","An endemic species occurs naturally in one specific geographic area and nowhere else in the world, making it a priority for conservation attention.","\u002Fslovar\u002Fendemik","\u002Fimages\u002Fslovar\u002Fendemik.png",{"title":165,"description":166,"path":167,"coverImage":168,"publishedAt":92,"order":89},"Migration Flyway","A migration flyway is the broad geographic corridor a population of migratory birds consistently follows between breeding and wintering ranges, often shaped by coastlines and mountains.","\u002Fslovar\u002Fmigracionnyi-put","\u002Fimages\u002Fslovar\u002Fmigracionnyi-put.png",{"title":170,"description":171,"path":172,"coverImage":173,"publishedAt":92,"order":89},"Migratory Birds","Migratory birds leave their breeding range for a separate wintering range on a predictable seasonal schedule, returning to breed in the same area each spring.","\u002Fslovar\u002Fpereletnye-ptitsy","\u002Fimages\u002Fslovar\u002Fpereletnye-ptitsy.png",{"title":175,"description":176,"path":177,"coverImage":178,"publishedAt":92,"order":89},"Molt in Birds","Molt is the periodic shedding and replacement of feathers, essential for flight efficiency, insulation, and — in many species — seasonal changes in plumage color.","\u002Fslovar\u002Flinka-u-ptic","\u002Fimages\u002Fslovar\u002Flinka-u-ptic.png",{"title":180,"description":181,"path":182,"coverImage":183,"publishedAt":92,"order":89},"Nest Box","A nest box is an artificial cavity built to attract hole-nesting birds where natural tree cavities are scarce, from starling boxes to smaller tit and sparrow boxes.","\u002Fslovar\u002Fskvorechnik","\u002Fimages\u002Fslovar\u002Fskvorechnik.png",{"title":100,"description":185,"path":101,"coverImage":186,"publishedAt":92,"order":89},"Nesting is the full process of building or selecting a nest site, laying and incubating eggs, and raising chicks to independence — behavior that varies enormously between bird families.","\u002Fimages\u002Fslovar\u002Fgnezdovanie.png",{"title":188,"description":189,"path":190,"coverImage":191,"publishedAt":92,"order":89},"Nomadic Birds","Nomadic (irruptive) birds move irregularly and unpredictably between areas in response to fluctuating food supply, rather than following a fixed seasonal migration.","\u002Fslovar\u002Fkochuyushchie-ptitsy","\u002Fimages\u002Fslovar\u002Fkochuyushchie-ptitsy.png",{"title":193,"description":194,"path":195,"coverImage":196,"publishedAt":92,"order":89},"Passage Migrants","A passage migrant is a bird seen in a region only briefly, while traveling between a breeding range and a wintering range that both lie elsewhere.","\u002Fslovar\u002Fproletnye-ptitsy","\u002Fimages\u002Fslovar\u002Fproletnye-ptitsy.png",{"title":5,"description":77,"path":91,"coverImage":76,"publishedAt":92,"order":89},{"title":199,"description":200,"path":201,"coverImage":202,"publishedAt":92,"order":89},"Range (Habitat Range)","A species' range is the total geographic area where it occurs, distinct from habitat, which describes the type of environment it uses within that area.","\u002Fslovar\u002Fareal-obitaniya","\u002Fimages\u002Fslovar\u002Fareal-obitaniya.png",{"title":204,"description":205,"path":206,"coverImage":207,"publishedAt":92,"order":89},"Resident Birds","Resident birds stay within the same general area year-round, neither migrating to a separate wintering range nor undertaking large nomadic movements.","\u002Fslovar\u002Fosedlye-ptitsy","\u002Fimages\u002Fslovar\u002Fosedlye-ptitsy.png",[],[210,211,212],{"label":96,"path":97,"description":98,"coverImage":148},{"label":100,"path":101,"description":102,"coverImage":186},{"label":104,"path":105,"description":106,"coverImage":213},"\u002Fimages\u002Fvidy-ptic\u002Fvidy\u002Fkryakva.png",1787114564496]