Precocial shiri: zvinoitwa kukura uye kushanda

Pane akasiyana classifications shiri, izvo kwakavakirwa maitiro siyana. Chimwe chaizvozvi ukuru pave vachangoberekwa kako uye kunyanya mberi kwavo kukura. Maererano ichi chokuratidza systematization kusiyanisa mapoka maviri guru: vana vevaiti shiri, mienzaniso zvinopiwa munyaya ino, uye nesting. Ngationgororei navo zvizere.

Nesting uye Mazana shiri: huru misiyano

Vose veboka iri bereka nokuturika mazai, hatching vachivatevera. Kwapera nguva Mazai manyana. Precocial shiri dzinoratidzwa ndechokuti zvavo achangoberekwa kako anenge pakarepo vakagadzirira akazvimirira vapenyu. nestlings muviri yakafukidzirwa pasi. It rematsutso uye anodzivirira muduku muviri kubva ezvinhu yaivhuvhuta zvakatipoteredza, kunyanya kubva pakarepo tembiricha kuchinja daily. Izvi zvinobvumira shiri idzi kusiya dendere pakarepo uye regai -oma.

Mazai ayo kubuda mazana shiri zvinosiyana zvikuru guru pakukura uye ane dzakawanda dzakatumirwa muviri. Mudumbu anodzishandisa kuita zvakawanda goko kukura kwazvo uye anenge pakarepo pashure hatching kutamira akazvimirira vapenyu. Hatching mazai vakadzi nokuda kwenguva - dzimwe nguva kwevhiki dzinopfuura nhatu. Pakarepo mushure hatching, manyana vanokwanisa kuona uye kunzwa zvakanaka. Dzavo tsandanyama kwava zvakazara, saka ivo kufamba tisingatungamirirwi. Izvi zvinokosha zvikuru kudzivirira pamusoro asingatarisirwi nezvikara. Pashure pemaawa mashomanana vana munotoriziva sei kumhanya makasimba, uye zvishoma nhunzi. Uye pashure vaviri vhiki vanogona tisingatungamirirwi kuwana zvokudya.

In nesting shiri vakarangana kako vari zvachose kuzvibatsira. Vanoberekwa miti ganda, minhenga, maziso nenzeve zvisipo. Mienzaniso nesting shiri dziri shiri, woodpeckers, cuckoos, hangaiwa nevamwe. Mushure aberekwa, havagoni kugara netsoka dzake, thermoregulation haisati kuumbwa. Nezvikonzero izvi, kako izvi imwe nguva kuramba ari dendere, vanoda vabereki vane hanya vanopiwa zvokudya uye nokupisa.

Poluvyvodkovye shiri

Pane chinhu zvenguva boka, ane nhengo nokubatanidza zvinhu zvose nesting uye zvisaririra shiri. Somuenzaniso, mazizi kako vanoberekwa bofu uye vakava pasi pokudzora vabereki, asi yakafukidzirwa minhenga. Asi seagulls kwenguva refu kuramba ari dendere, pasinei nokuti tsotsonya uye akasvinudza meso, uye mvere.

dzinogarisana

Precocial shiri, vane vamiririri vano- siyana, muri waterfowl kana kurarama panyika. Havadi kuvaka matendere adzo kumusoro derevyah.Ih kusiyanisa guru muviri saizi uye vakawanda guru. Naizvozvo, huku vane mukana asingaremekedzwi kutanga flutter zvishoma nezvishoma zvakazara dhanzi. Waterfowl Mazana kutanga havaratidzi dzakabudirira mapapiro, vakawanda nguva pakutsaurira paumbwe nokushambira unyanzvi.

Zvino ngatitorei kunyatsoongorora dzinokosha zviumbu veboka.

gruiformes

By precocial shiri dziri ose gruiformes kukupfura. Vari dzinoratidzwa mutsipa refu uye zvakafanana muromo uye tsoka. Nokuda pamberi muzvishwe vari trachea, ivo emit maitiro ruzha, akafanana nyere. Sezvo vana, gruiformes kuvaka matendere pasi. Uyu shiri ravakwa guru, mamita anosvika matanhatu kumusoro. The Kukura azvo vanogona kusvika mamita maviri. Vakawanda mhando boka iri ndivo musoro, inowanzorimwa uye korona Cranes.

Waterfowl

Waterfowl Mazana shiri (mienzaniso - a nejichidza, Dhadha uye mallard) ndezvaJehovha hurongwa Anseriformes. Dzavo maitiro chinhu ndiyo Kuwanikwa navanopinda uye flattened muromo. Inside aro okumusoro mugove chiri horny mahwendefa kushumira kuchenesa zvokudya zvacho kubva mvura.

Vachiti "ibva" iripo nokuda waterfowl. The yose ndeyokuti kana vane mafuta shwanu, chakavanzika zvavakanga Aisa minhenga yadzo. Somugumisiro, zvinova isapinda. Waterfowl chinhu chinokosha chipfuro marudzi, nokuti vane chinonaka zvinovaka nyama uye mafuta, ine semushonga. Zvinofanira pamusoro minhenga inodziya uye Zvinhu Zvisina Basa, dzinoshandiswa kuzadza magumbeze mutsamhiro, uyewo kugadzira knitwear.

Saka, vana shiri zvakawanda zvimwe achienzaniswa panosangana uye vane kukuru mune zvoupfumi kukosha kuvanhu.