The underground water supply of Jerusalem
Underground water facilities in Jerusalem is a special milestone in the history of the development of the city of David. Initially, residents used a single source called the Gihon outside…

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Water intake from underground sources
The composition of the water intake and their General arrangement Off-site water supply systems from groundwater sources consist of: rainwater (meter) facilities for water intake, water wells (aquifer); pumping stations…

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The construction of the world’s animals

When wasps build a nest use a home-made paper. They tear off pieces of the wood fibers, moisten them with saliva, turning into a paste, which is used in the construction. Multilayer sheath insulates the inside of the nest from the outside air, allowing you to keep in the room for the offspring of almost constant temperature.

Monumental architecture in the architecture of insects

Termites tend to build their houses from special cartoniporno material chewed and digested wood pulp. The size and shape of the mound amazing variety. So, militant African termites erect a building three stories high. The walls of the termite mound reaches half a meter in thickness and not succumb to the blows of an axe. And the interior of the mound is a Suite (chain) halls with domed ceilings and columns on each side.

Beavers – nature’s architects and engineers, building not only housing, but also platinum, which allows to regulate the water level in the river. The beaver Lodge – a bunch of messy piles of branches on the river Bank. Inside the Lodge is a spacious room with two underwater entrances.Lodges reach a respectable size – up to 10 m in diameter and up to 2.5 m in height. The roof of the house consists of beaver richlocaine branches – so the owners can ventilate your home. When the river grows shallow and the entrance to the Lodge is on land,beavers are taken for the construction of the dam. Mound of fallen branches, stones and mud they partition off the river and the water level in the river rises again.

Old badger township, passed on from generation to generation, represent a complex multi-layered structures at the foot of large trees. In towns like this happens to 40 entrance holes, leading into a deep hole, and then to clean dry nesting chambers.

Without the pantry – not do

Such smart folks as hamsters, in addition to a cozy living cameras and multiple moves is always a rich pantry. And sometimes these barns can be detected up to 15 kg of grain.

The strengthening of the facade

The nest of the Chaffinch – a very clever construction. From the outside it “faced” lichen, birch bark, pieces of bark, lumps plant down. All plant material bonded to the threads of the web, making the whole structure acquires great strength.

Internal work

The song thrush builds a nest of thin twigs of spruce, green moss, stems of herbs. The inner wall of the socket smoothly “are plastered” with a layer of clay or mud mixed with wood dust.


Caiman crocodile for laying 10-15 eggs of the female constructs the nest of rotting plants among the thickets near water. South American caimans prefer to place their nest mounds in the termite mounds or large rotting trunks, using them as a natural thermal battery.


Warbler-Chernogolovka makes a nest of dry grass in the form of a thin paste with translucent walls and bottom. Laying in that nest well ventilated. Hang this basket by using web which birds are purposefully searching for and collecting.

Gazebo of love

In Australia and nearby Islands “Besednova” birds or elsinki. The name they received because of their original buildings, similar to salatiki. These salatiki – no nests, but “clubs”, or gazebos of love, where the birds meet and spend a Dating game.

All is stolen to us

Spanish sparrows prefer to reside groups, on one tree you can sometimes find more than one hundred ball-shaped nests made of new-mown hay. In the colonies some sparrows stealing construction material. And unmarried males build nests, often several times to start a building from scratch, as during unavoidable absences take away the property of their neighbors.

“The dugout” for Kingfisher

The Kingfisher nests in a burrow. At first the bird pecks the ground with its beak, then throws haibara short legs loosened earth. So it turns out the hole up to 1 m long, at the end of which is located the nest chamber. And as bedding winged artisan uses bones and scales are edible fishes.