Rapports de découverte (1929) rapports de découverte discoveryreports11929inst Année : 1929 falaises, mais sur le terrain en pente et le niveau au-dessus d'eux. Toujours, cependant, ils nichent près d'une forte pente ou falaise afin qu'ils puissent avoir un bon 'take-off' pour monter l'aile, puisqu'ils sont incapables de s'élever dans l'air du niveau. Le nid est une structure volumineuse construit de boue, le tussac, tourbé et moss jusqu'à une hauteur d'un demi mètre, et est d'environ un mètre de diamètre. Les côtés en pente sont et il y a une légère dépression sur le dessus, dans laquelle l'œuf. Le nid est construit par les matériaux étant prévue en un tas et t

• Contributeur: Bookend / Alamy Banque D'Images
• ID de l’image: T1JK53
• Taille du fichier: 5,7 MB (96 KB Téléchargement compressé)
• Autorisations: Modèle - non | Propriété - non
• Dimensions: 2203 x 908 px | 37,3 x 15,4 cm | 14,7 x 6,1 inches | 150dpi

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Discovery reports (1929) Discovery reports discoveryreports11929inst Year: 1929 cliffs, but on the sloping and level ground above them. Always, however, they nest near a steep slope or cliff so that they can have a good 'take-off' for getting on the wing, as they are unable to rise into the air off the level. The nest is a bulky structure built of mud, tussac, and peaty moss up to a height of half a metre, and is about a metre across. The sides are sloping and there is a shallow depression on the top in which the egg is laid. The nest is built by the materials being laid down in a heap and trodden down by the large webbed feet of the birds, no interweaving of the materials taking place. As the young one grows the nest gets trodden down more and more so that it gets much flattened out, and new materials are added to it from time to time during the occupation of the young. For instance, in Coal Harbour in September, 1925, nests were found with blades of tussac newly laid on top of them, though the snow was level with the top of the nests and in many cases was above them. The young had occupied these nests for about eight months. In the breeding season, before and after pairing takes place, the albatross go through an elaborate courtship. In all cases the courtship ceremonies are the same, but before pairing takes place several males and one female take part, whereas after pairing it is confined to the one male and female. After the egg is laid and incubation has started the courting is discontinued, though the birds of each pair still show a great affection for one, another. In courting before pairing several males gather around one female and bow to her, bringing the head showing plumages intermediate between close down to the ground. As they do this they utter a the cMonoptera and exulans stages. harsh groaning sound, and the female bows and groans Sketched from hving birds on the nests, back at them. After several bows the males open the wings to about half the

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