Izilwane ezinama-gull zihluke ngokuphelele kubazali bazo

Ama-seagull ayingxenye enkulu kakhulu yezinyoni ezivela emndenini wezinkumbi. Bahlala olwandle, Futhi emanzini angaphakathi. Njengomthetho, izinhlanzi ziyizinyoni zezinga eliphakathi noma elikhulu. Ukuphunga ngokuvamile kuvambile noma kumhlophe, ngokuvamile kunamamaki amnyama emaphikweni noma ekhanda. Isici esivelele salezi zinyoni singabizwa ngokugcwele ezinyaweni zezingqimba zokubhukuda kanye nomlomo, ovalwe kancane ekugcineni.

Amatshwane ama-gulls avela kahle futhi asuke evulekile amehlo. Lezi zitshalo ezibonakala zihluke ngokuphelele kubazali bazo. Sekuyisikhashana basesidlekeni ngaphansi kokuqondiswa kwabo. Kakade amahora ambalwa emva kokuzalwa kwezinhlanzi ezincane ziqala ukufuna ukudla. Kubazali babo, bahlala bengabonakali ezinsukwini ezimbalwa emva kokuzalwa, bese kuthi abazali babo bonke baqaphele inkukhu yabo. Ngendlela, uyazi ukuthi lezi zinkukhu zibizwa kanjani? Esichazamazwi saseDalya, i-seagull encane (i-chick) ibizwa ngokuthi i-chabar. Kodwa ku-Danilovsky chabor - lokhu kuhlotshiswe eqanda, kodwa hhayi okwakhiwe.

Ama-seagull akwazi ukondla amatshwele abo kuphela - angathatha abantu abangabazi, kodwa kuphela ezinsukwini ezingu-14 ubudala. Ezindaweni zokuhlala ezikhungweni, ukwamukelwa kwenzeka kaningi ngaphansi kwezimo ezithile. Isibonelo, ukwesaba lapho isibonisi sibonakala noma kubangelwa ukuvakashelwa kumuntu. Kungenzeka futhi ngenxa yezimo zezulu ezingathandeki.

Ukwamukelwa kweningi kakhulu kwenzeka emahlathini aseFranklin, okuyinto isidleke emanzini. Bakha izidleke zabo emhlanga, futhi ngesikhathi sokukhuphuka kwamanzi izidleke eziningi zibhukuda, njengoba zingenakuzuza. Izinkukhu ezincane zezinhlanzi zaseFranklin ngalesi sikhathi zivame ukushiya izidleke zazo ukuba zibhukude. Futhi ngamunye wabo angakwazi ukukhuphukela kunoma yisiphi isidleke, lapho ezokwamukelwa khona yizinyoni ezindala emzimbeni wayo.

Kodwa isihluthulelo esingumvuthi, esizala eChile endaweni egwadule, isimo sihlukile. Izinyoni ezindala zimi phezu kwezidleke futhi imizimba yazo yenza isithunzi. Noma iyiphi ikhukhu elimnandi lingaya esidlekeni lapho londliwa futhi livikelekile elangeni. Kodwa uma lide nesikhumbulu, lizohlaselwa yizinkukhu ezindala ngisho nabazali bayo.

Kufanele kuthiwa ama-seagull abhekene nokuziphatha okuthukuthele. Futhi intukuthelo yabo ihlale iqondiswa kubantwana. Lokhu kujwayelekile ikakhulukazi kwamadoda. Bavame ukuhlasela izinkukhu ezithinta noma zigijime. Ngesikhathi sokuhlaselwa okunjalo, amatshwane ama-seagulls avame ukufa, futhi okungenani ngandlela-thile kuzobe kulungiswa uma kamuva kusetshenziselwa ukudla. Kodwa cha, lokhu akukwenzeki. Ngakho-ke, abesilisa bahlaselwa amatshwele ahambayo kuphela ngenxa yokuthi bayinzalo yezinye izinhlanzi. Isibonelo, ku-crab, i-intraspecies predation ine "effect domino". Uma umuntu eba isidleke noma iqanda elisuka esidlekeni, owesilisa othukuthele uzoba iqanda (noma inkukhu) kusuka kwelinye ibanga nokunye.

Ama-colonyal colonyal athuthukisa ukunakekelwa komphakathi ngenzalo yabo. Lesi simo singenzeka ngokuzenzekelayo, ngenxa yokuhlaselwa kwezilwane ezidla inyamazane. Ama-nestlings abuthana ngamaqembu amakhulu - ama-nurseries, avikelwe yizinyoni ezindala. Ukwakheka kwezilwane ezinjalo kusiza ama-seagulls avikele inzalo yabo ekuhlaseleni izimpungushe, amagundane nezinye izidumbu. Bangabuye baqoqwe uma ikholoni iphazamiseka umuntu. Ezinye zezinyoni ezindala zihlala ziqashwe yizinsizwa, kuyilapho bonke abanye bexosha umfokazi noma bahlasele isidumbu esivela phezulu.