These vehicles have a range of two to five kms, fly some 100 to 200 metres above ground for 30-40 minutes and take pictures of what's happening below. Significantly, they are not easily susceptible to radar detection as they are "not all of metal" and carbon fibres are used in making them.
Defence Research and Development Organisation is developing an ultra lightweight Unmanned Aerial Vehicle which can be used by troops for reconnaissance of their area of operation.
The US Air Force is developing the miniature spy craft with the goal of making them so small that they resemble birds and even insects.
The United States army has developed a realistic robot bird that has even tricked real flocks and hawks to attack it midair, making it a potential unsuspecting future war agent.
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