பறவையால் உருவாக்கப் பட்ட பெரிய கூடு
THE LARGEST NEST BUILT BY ANY BIRD
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THE LARGEST NEST BUILT BY ANY BIRD
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விடா முயற்சியும், உழைப்பும் சிறுக சிறுக இருந்தாலும் வெற்றி பெறலாம் என்பதற்கு பறவையின் இந்த பெரிய கூடு.
கனவை நினைவாக்கலாம். காரியங்களை கண்ணும் கருத்துமாக கவனித்தாலே கட்சிதமாக முடியும், வெறும் வெட்டி பேச்சியில் வெற்றியை பெற முடியாது.
கனவை நினைவாக்கலாம். காரியங்களை கண்ணும் கருத்துமாக கவனித்தாலே கட்சிதமாக முடியும், வெறும் வெட்டி பேச்சியில் வெற்றியை பெற முடியாது.
THE COMMUNAL BIRD NESTS OF SOCIABLE WEAVERS"
Sociable Weaver (Philetairus socius) is an endemic species to South Africa, range is located in Northern Cape Province and southern Namibia. Most of the populations live in the Kalahari Desert. They are best known for their gigantic communal nests, which are not only a rarity, but also the largest built by any bird. Unlike other weavers who build their nests in the breeding season, sociable weavers use and maintain the nests throughout the year and can house up to 100 families, totalling 300-400 birds. Some nests have even remained occupied for over 100 years. Unlike most weaver birds, sociable weavers don’t weave. The massive nests consist of individual nest chambers, entrances and tunnels which are used throughout the year for breeding and roosting and are embedded within a communal thatch. They use different materials for different parts of the nest; large twigs form support beams and provide the basic structure of the nest, while grasses form separate nesting chambers within the nest. Each nesting chamber is lined with soft materials, such as fur, cotton or fluff. And to keep predators out, the weavers line the entrances to nest chambers with sharp sticks. When all is finished the nest looks something like an upside-down haystack. The structure grows as the birds add new apartments.
REASONS:
The sociable weavers build these massive communal nests for a variety of reasons. The desert of Southern Africa is hot and dry, but it's a very stable environment. Therefore the birds don't have to migrate or brave severe seasonal changes. Large nests help the sociable weavers stay comfortable in the harsh climate of the Kalahari Desert. In the summer months, temperatures in the Kalahari can reach up to 50 degrees Celsius. To avoid the direct sun and keep cool, weavers hide in the cooler outer chambers of the nest, where temperatures are maintained around 7-8 degrees. In winter, when temperatures are near freezing, the weavers retreat to the inner chambers where insulation keeps them cosy and warm. The South African pygmy falcon relies on the sociable weavers’ nest for its own home, often nesting side by side with the sociable weavers. This provides the sociable weaver with a bit of an alarm system, more eyes means more chance of detecting predators before it’s too late.
The sociable weavers build these massive communal nests for a variety of reasons. The desert of Southern Africa is hot and dry, but it's a very stable environment. Therefore the birds don't have to migrate or brave severe seasonal changes. Large nests help the sociable weavers stay comfortable in the harsh climate of the Kalahari Desert. In the summer months, temperatures in the Kalahari can reach up to 50 degrees Celsius. To avoid the direct sun and keep cool, weavers hide in the cooler outer chambers of the nest, where temperatures are maintained around 7-8 degrees. In winter, when temperatures are near freezing, the weavers retreat to the inner chambers where insulation keeps them cosy and warm. The South African pygmy falcon relies on the sociable weavers’ nest for its own home, often nesting side by side with the sociable weavers. This provides the sociable weaver with a bit of an alarm system, more eyes means more chance of detecting predators before it’s too late.
Social weaver birds nest by David Attenborough:
https://www.youtube.com/watch?v=_jPibkNv7lM
https://www.youtube.com/watch?v=_jPibkNv7lM
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