Kaliology
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The Kaliologie ( . Greek : Kalia = Bird's Nest and -logie ( give a wiki. Λόγος lógos , word , and doctrine , meaning or speech )) is the bird - nests customer and a branch of Ornithology .
A nest is used for the clutch, the brood , the storage of food and to protect the nestlings during rearing . Some bird species, such as the moorhen, build several nest forms during their breeding season , including a nest in which the actual breeding takes place and which is defended extremely aggressively during the breeding season.
Most bird nests are only used to raise the offspring. Since bird eggs with their calcified shell can roll well, a particularly important reason for the birds to build nests is to prevent the eggs from rolling away.
The open construction of the residential building, which is typical for birds, results from the fact that a complete conversion obstructs the escape route for an animal capable of flying. There are numerous exceptions and can in particular serve to avert danger from the airspace.
Another protective strategy for nest building for mostly smaller birds is to build nests so far away from the trunk with a load-bearing capacity that is safely guaranteed for the nest and residents, but is not sufficient for the approach of climbing carnivores , for example weaver birds . An additional measure is to rappel down the nests to make them more difficult to reach for climbing snakes.
Nests of large birds hardly have a protective function; they rather serve to provide a hold for the clutch and brood.
In the case of birds of prey or certain other large birds, the nest is called eyrie , such as eagle's nest or stork's nest , which can be built in inaccessible places such as steep rock faces or on towers ( storks ).
See also
- Oology , the bird's egg science
Web links
Individual evidence
- ^ Nicholas E. Collias: The evolution of nest-building in birds. In: Am. Zoologist , Volume 4, 1964, pp. 175-190, [1]
- ↑ Karin Stämpfli et al .: Influence of nest-floor slope on the nest choice of laying hens. In: Applied Animal Behavior , Volume 135, No. 4, 2011, pp. 286–292, [2]
- ↑ Richard Tenaza: Behavior and nesting success relative to nest location in Adélie penguins (Pygoscelis adeliae). In: The Condor , Volume 73, 1971, pp. 81-92 [3]