[{"data":1,"prerenderedAt":198},["ShallowReactive",2],{"glossary_en:\u002Fslovar\u002Fkladka-yaic":3,"alt-locale:glossary_en:\u002Fslovar\u002Fkladka-yaic":99,"section-listing:glossary_en:\u002Fslovar":100,"section-listing:disabled":193,"related-covers:en:\u002Fslovar\u002Fgnezdovanie|\u002Fslovar\u002Finkubaciya-yaic|\u002Fslovar\u002Fpuhovoi-ptenec":194},{"id":4,"title":5,"body":6,"coverImage":62,"description":63,"extension":64,"faq":65,"imagePrompt":72,"meta":73,"navigation":74,"order":75,"pageType":76,"path":77,"publishedAt":78,"readingMinutes":79,"relatedLinks":80,"seo":93,"sitemap":96,"stem":97,"tags":75,"updatedAt":75,"__hash__":98},"glossary_en\u002Fslovar\u002Fkladka-yaic.md","Egg Clutch",{"type":7,"value":8,"toc":56},"minimark",[9,14,39,42,46,53],[10,11,13],"h2",{"id":12},"definition","Definition",[15,16,17,18,22,23,28,29,33,34,38],"p",{},"A ",[19,20,21],"strong",{},"clutch"," is the complete set of eggs a female bird lays during a single nesting attempt, laid over consecutive days (typically one egg per day) before incubation begins. Clutch size is one of the most variable traits across birds: the ",[24,25,27],"a",{"href":26},"\u002Fen\u002Fvidy-ptic\u002Fvidy\u002Fobyknovennaya-pustelga","common kestrel"," usually lays 3 to 6 eggs, while waterfowl such as the ",[24,30,32],{"href":31},"\u002Fen\u002Fvidy-ptic\u002Fvidy\u002Fkryakva","mallard"," or ",[24,35,37],{"href":36},"\u002Fen\u002Fvidy-ptic\u002Fvidy\u002Fsery-gus","greylag goose"," commonly lay 8 to 12 — among the largest clutches of any bird group.",[15,40,41],{},"Clutch size broadly tracks a species' life-history strategy. Birds that live a long time, raise few young per attempt, and invest heavily in each chick — many raptors and seabirds — tend to lay small clutches, sometimes a single egg. Species with shorter lifespans, higher annual mortality, and the capacity to raise several broods in one season, common among many songbirds and waterfowl, tend to lay larger clutches, spreading reproductive risk across more eggs and more attempts.",[10,43,45],{"id":44},"why-clutch-size-matters-for-observation","Why clutch size matters for observation",[15,47,48,49,52],{},"Clutch size interacts closely with ",[19,50,51],{},"incubation"," timing: because eggs are laid on separate days but many species do not begin serious incubation until the clutch is complete, all the chicks in a clutch typically hatch within a day or so of each other despite the eggs being laid days apart. Species that begin incubating from the first egg, by contrast, produce broods with staggered hatching and a range of chick sizes within the same nest — a pattern seen in several owl species, where a late chick may be considerably smaller than its older nest-mates.",[15,54,55],{},"Clutch size can also shift within a species depending on latitude, food supply, and breeding attempt: birds further north or with more abundant food often lay somewhat larger clutches than the same species breeding in poorer conditions further south, and a second or third clutch in a season is frequently smaller than the first.",{"title":57,"searchDepth":58,"depth":58,"links":59},"",2,[60,61],{"id":12,"depth":58,"text":13},{"id":44,"depth":58,"text":45},"\u002Fimages\u002Fslovar\u002Fkladka-yaic.png","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.","md",[66,69],{"q":67,"a":68},"Does clutch size vary between species?","Considerably. A common kestrel typically lays 3 to 6 eggs, while ducks and geese such as the mallard or greylag goose often lay 8 to 12; species with slower reproductive strategies and long parental care, like many seabirds and raptors, tend toward the smaller end of the range, and fast-breeding, short-lived species toward the larger end.",{"q":70,"a":71},"What happens if eggs from a clutch are lost?","Many species will lay a replacement clutch if the first is lost early enough in the season, provided there is still time to raise chicks before conditions turn unfavorable — this is one reason removing eggs or disturbing a nest can prompt a bird to re-nest rather than abandon breeding entirely for the year.","Photorealistic macro photo, a close-up of a clutch of five pale buff-and-brown speckled Anas platyrhynchos mallard eggs nestled in a shallow down-lined nest hollow among dry grass, soft directional light revealing individual speckle patterns on each shell, blurred reed background, shallow depth of field, 16:9",{},true,null,"glossary","\u002Fslovar\u002Fkladka-yaic","14.07.2026",1,[81,85,89],{"label":82,"path":83,"description":84},"Nesting","\u002Fslovar\u002Fgnezdovanie","The full process of building a nest and raising chicks",{"label":86,"path":87,"description":88},"Egg incubation","\u002Fslovar\u002Finkubaciya-yaic","Keeping eggs warm until they hatch",{"label":90,"path":91,"description":92},"Downy chick","\u002Fslovar\u002Fpuhovoi-ptenec","A chick covered in soft down at hatching",{"title":94,"description":95},"Egg Clutch — what it is and how size varies","What a bird's egg clutch is, how clutch size differs between species, and why some birds re-lay after losing a clutch.",{"loc":77},"slovar\u002Fkladka-yaic","fvlAf3OcGT0W1TWsZ9bvUKB_2zPtGe9c0con3OKlLwQ",{"ru":74,"es":74},[101,106,111,116,121,126,131,135,136,140,145,150,155,160,165,168,173,178,183,188],{"title":102,"description":103,"path":104,"coverImage":105,"publishedAt":78,"order":75},"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":107,"description":108,"path":109,"coverImage":110,"publishedAt":78,"order":75},"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":112,"description":113,"path":114,"coverImage":115,"publishedAt":78,"order":75},"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":117,"description":118,"path":119,"coverImage":120,"publishedAt":78,"order":75},"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":122,"description":123,"path":124,"coverImage":125,"publishedAt":78,"order":75},"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":127,"description":128,"path":129,"coverImage":130,"publishedAt":78,"order":75},"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":132,"description":133,"path":91,"coverImage":134,"publishedAt":78,"order":75},"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":5,"description":63,"path":77,"coverImage":62,"publishedAt":78,"order":75},{"title":137,"description":138,"path":87,"coverImage":139,"publishedAt":78,"order":75},"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.","\u002Fimages\u002Fslovar\u002Finkubaciya-yaic.png",{"title":141,"description":142,"path":143,"coverImage":144,"publishedAt":78,"order":75},"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":146,"description":147,"path":148,"coverImage":149,"publishedAt":78,"order":75},"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":151,"description":152,"path":153,"coverImage":154,"publishedAt":78,"order":75},"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":156,"description":157,"path":158,"coverImage":159,"publishedAt":78,"order":75},"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":161,"description":162,"path":163,"coverImage":164,"publishedAt":78,"order":75},"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":82,"description":166,"path":83,"coverImage":167,"publishedAt":78,"order":75},"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":169,"description":170,"path":171,"coverImage":172,"publishedAt":78,"order":75},"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":174,"description":175,"path":176,"coverImage":177,"publishedAt":78,"order":75},"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":179,"description":180,"path":181,"coverImage":182,"publishedAt":78,"order":75},"Precocial and Altricial Birds","Precocial chicks hatch mobile, feathered, and able to feed themselves within hours; altricial chicks hatch blind, naked, and entirely dependent on their parents.","\u002Fslovar\u002Fvyvodkovye-i-ptencovye-ptitsy","\u002Fimages\u002Fslovar\u002Fvyvodkovye-i-ptencovye-ptitsy.png",{"title":184,"description":185,"path":186,"coverImage":187,"publishedAt":78,"order":75},"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":189,"description":190,"path":191,"coverImage":192,"publishedAt":78,"order":75},"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",[],[195,196,197],{"label":82,"path":83,"description":84,"coverImage":167},{"label":86,"path":87,"description":88,"coverImage":139},{"label":90,"path":91,"description":92,"coverImage":134},1787114563806]