No čata:
Vai Stellera ērgļu starpā pastāv brāļu un māsu kanibālisms?
Татьяна: Es atļaušos domāt, ka Stellera jūras ērgļiem ligzdā ir zināma cāļu savstarpēja mogalināšana, tas nav kanibālisms.
Magadanas rezervāta tīmekļa vietnē ir video ar vairākām ligzdām, kas ņemtas no kvadrokoptera. Vienā ligzdā var redzēt divus cāļus, citā viens un vēl citā ligzdā trīs cāļi, visi gandrīz pirms pirmā lidojuma vecuma. Domāju, ka daudz kas ir atkarīgs no barības piedāvājuma teritorijā.
Šeit, blakus ligzdai, atrodas neliela akmeņaina sala, ko sauc par putnu tirgu, kurā ligzdo attiecīgi daudz putnu, ar barības piegādi šajā ligzdā Danai un Magai nebūs problēmu un ceru, ka starp cāļiem nebūs spēcīgas konkurences.
Iespējams, ka Stellera jūras ērgļu ligzdās nebūs neviena siblicīda gadījuma. Mēs visu uzzinām, novērojot ligzdas.
Johan Krüger
I have a question: Is there sibling cannibalism among Steller's eaglets? Anyone knows?
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I would venture to suggest that Steller's sea eagles have some degree of siblicide between chicks in the nest, this is not cannibalism.
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The website of the Magadan Reserve has videos of several nests taken from a quadrocopter. In one nest one can see two chicks,
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in another one, and in another nest three chicks, all almost before the age of the first flight. I think that a lot depends on the food supply in the breeding territory.
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Here, next to the nest, there is a small rocky island, which is called the bird market, where a lot of birds nest, respectively,
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with the supply of food in this nest, Dana and the Maga will not have problems and I hope there will not be strong competition between the chicks.
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It is possible that there is no siblicide in the nests of Steller's sea eagles. We learn everything by observing the nests.