HIGH TECH LOCATION SYSTEM

Animals evolved sonar and radar systems millions of years ago to find their way or to detect objects in their path. They also developed infrared heat sensors and sensors that detect electrical activity in the muscles of their prey.

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PLATYPUS HAS A NOSE FOR ELECTRICAL CURRENTS

The duck-billed platypus uses its snout to detect electricity. This enables it to find its food while it Swims with its eyes, ears, and nostrils tightly closed. The curious aquatic egg-laying mammal lives in the rivers of Australia. Lining its large leathery 'bill are thousands of pore-like openings, each containing sensory cells that, can detect minute electrical currents produced by the moving muscles of its prey, such as the flicking of a shrimp's tail, or the wriggling of a worm. Using its sensitive snout in this way, the platypus can scour the riverbed to satisfy its enormous appetite: it consumes almost its own weight in food each day. With its bill the platypus can sense 

even weaker electrical fields associated with the movement of water over objects in the river, such as logs and rocks, helping it to find its way. 

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OWLS USE FEATHERS AS A LISTENING DEVICE

Owls use their entire face to receive sounds. The heart-shaped disc of tightly packed feathers on a barn owl's face, for example, is designed to collect sounds and then focus them on the owl's ears, which are buried below the feathers on either side of its head. Owls hunt mainly at night and though they have good night vision, they rely on their ability to detect minute sounds to catch their prey (mice, voles, and shrews). The owl can compare the sounds

MIDNIGHT FEAST- A barn owl returns to its nest having located and caught a field mouse in pitch darkness.The owl detected the rustlings of the mouse as it ran through the grass.

 reaching each ear and work out the location of their source. In addition, one ear is slightly higher than the other so the bird can gather both horizontal and vertical information. With this arrangement, it can pinpoint the position of prey accurately in complete darkness. It then swoops down with silent flight,using its sensitivity to the slightest rustle made

by its prey to align its talons to every

 zigzag movement the prey might make. At just the right moment, it grabs its victim and the hunt is over.  

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THE HARPY EAGLE'S SMASH AND GRAB

Swooping down through the treetops, the harpy eagle plucks a monkey from a branch. In a single squeeze of its formidable talons it Crushes the animal to death. The harpv eagle lives in the tropical forests of South and Central America, where it is the top aerial predator. The harpy has shorter wings and a longer tail than many other large eagles, enabling it to manoeuvre through the forest canopy at speeds in excess of 80 km/h (50 mph). Yet its 8 kg (18 lb) body weight makes it one of the world's largest eagles. It slams into its prey with an energy that rivals a bullet from a rifle. Equipped with the most powertulfeet of any knownbird of prey, spanning 25 cm (10 in), and toes Teaturing massive dagger-like talons uP to 4 cm (11/2in) long, the harpy eagie can grab and despatch large mammals with consummate skill.  

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MOTH WITH A DRINKING STRAW FOR A TONGUE

The hawk moth has the longest proboscis of all known moths and butterflies. It uses it to take a drink while still on the wing. The European  convolvulus hawk moth has a proboscis or 'tongue that is 9 cm (31/2in) long, twice as long as the moth's body. Its proboscis looks like a drinking straw and when not in use it lies coiled up under its head. Hawk moths feed on plants with long, tubular flowers such as honeysuckle. Once it has found a suitable food plant, the moth hovers in front of a flower, extending its proboscis to reach the sweet, energy rich nectar at the base. 

When hovering over a flower, hawk moths move their wings at such speed that, like a hummingbird, they are seen as barely a blur.  

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