London, Aug 24 IANS | 26 days ago

Can a bird's nest bring down a huge tree? For Africa's incredible social weaver birds, pulling down a tree is a child's game.


About the size of sparrows, these birds come together in colonies of as many as 500 to build enormous nests that weigh over 900 kg, are 20-feet-long, 13-feet-wide and seven-feet-thick.

"The structures are so big they can collapse the trees they are built on and so well-constructed they can last for a century," Gavin Leighton, a biologist at University of Miami, said.

This is how they weave monstrous nests.

Social weaver birds line the insides of the chambers with grass and feathers and, occasionally, cotton balls taken from fields.

One chamber provides three or four birds a warm place to rest as winter settles in.

Social weavers build entrances to their nests at the bottom, making them more inaccessible to predators, wired.com reported.

This positioning also helps keep water out.

Chambers are never connected - each has a single entrance.

"From an evolutionary perspective, living in such big groups boosts an individual's chances of not getting picked off by a predator," Leighton added.

(Posted on 24-08-2014)

Share This Page:


Post your comments


Information on States of India:

Andaman Nicobar | Andhra Pradesh | Assam | Bihar | Chandigarh | Chhattisgarh | Dadar Nagar Haveli | Daman Diu | Delhi | Goa | Gujarat | Haryana | Himachal Pradesh | Jammu Kashmir | Jharkhand | Karnataka | Kerala | Lakshadweep | Madhya Pradesh | Maharashtra | Manipur | Meghalaya | Mizoram | Nagaland | Orissa | Pondicherry | Punjab | Rajasthan | Sikkim | Tamil Nadu | Tripura | Uttar Pradesh | Uttaranchal | West Bengal

INDIA REGIONAL MAPS:

Andhra Pradesh Travel Map | Bihar Travel Map | Goa Travel Map | Gujarat Travel Map | Haryana Travel Map | Himachal Pradesh Map | Karnataka Travel Map | Kerala Travel Map | Maharashtra Travel Map | Punjab Travel Map | Rajasthan Travel Map | Sikkim Travel Map | Tamil Nadu Travel Map | Uttar Pradesh Travel Map | West Bengal Travel Map |

MORE MAPS OF INDIA:

Airports of India | Districts of India | India Pilgrim Centers | Tourism Map of India | National Highways in India | India Railway Routes |

INDIA CITY MAPS:

Ahmadabad | Bangalore | Chennai | Coimbatore | Delhi | Hyderabad/Secunderabad | Kochi | Kolkata | Mumbai | Pondicherry | Pune | Surat |

KERALA TRAVEL MAPS:

Alappuzha | Ernakulam | Idukki | Kannur | Kasaragod | Kollam | Kottayam | Kozhikode | Malappuram | Palakkad | Pathanamthitta | Thiruvananthapuram | Thrissur | Wayanad |