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Hatching Aid Behaviour and Raising the Young of the Budgerigar   [Title Translation]

Schlüpfhilfeverhalten und Aufzucht der Jungen beim Wellensittich   [Other Title]
Produksjonsår: 1985
Sjanger: Documentary Film
Innspillingssted: n/a

Credits
Production company: GEO Film GmbH (Hamburg)
First released by: IWF (Göttingen)
Distributor: IWF (Göttingen)
Author: Immanuel Birmelin


nøkkelord: Aves, Aves, Aves, Aves, Brutpflege, Füttern, Melopsittacus undulatus, Psittaciformes, Schlüpfen, Schlüpfhilfe, Sittich, Wellensittich, Wellensittich, brood care, budgerigar, feeding, Hatching, hatching aid, Psittaciformes
Behaviour of the budgerigar (Melopsittacus undulatus) while the birds hatch and breed their off-spring. It is shown in detail how the female budgerigar provides the hatching bird with help in emerging from the egg and there is a discussion about the biological significance of this behaviour. The combinations of stimuli which initiate hatching are tested in a trial run. The young bird pips the shell as it moves within the egg. The bird's movements inside the egg were simulated using a Mexican jumping bean. The moth in this case is the Kasperyresia salticans which lives in the seed of a Mexican fruit. The caterpillar is set in motion by the warmth of the sun or of the brooding bird and then the seed begins to jump.

Version 1
Språk: deu
Lyd: Sound film
Visningsformat: n/a
Varighet: 10 min

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Version 2
Språk: deu
Lyd: Sound film
Visningsformat: n/a
Varighet: 10 min

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Version 3
Språk: deu
Lyd: Sound film
Visningsformat: n/a
Varighet: 10 min

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