The airport authorities use a number of techniques to manage the hazard of bird strike in and near airports. These include,
Elimination of bird habitats- Birds usually come to the airport area due to the availability of food sources. Denial of food to birds by eliminating the sources (like landfills, garbage, crops, dumps etc) will reduce the chance of birdstirke by eliminating the source.
It also helps to keep the airport and surrounding areas unattractive to birds (for example, by eliminating water stagnation, vegetation cover etc) as it prevents the birds from nesting there.
Scaring them away- A number of airports use a number of bird repellents like pyrotechnics, cannons (mostly just prior to aircraft approach to prevent bird habituation), chemical repellents etc.
In some cases, specially trained animals (like falcons, dogs etc) have been used to scare away the birds or they are trapped.
In some cases, the flight schedule can be altered if bird movement is expected in the area (for example, if the airport is on a bird migration route).
The problem can be solved by simply killing the birds in the area, though this drastic step is usually not implemented except in the most extreme cases. In general, the nesting sites of birds are destroyed to prevent them from staying permanently near the airport.
Usually, a combination of above methods is used to manage the birds.
The only procedure available for flight crews is to either delay the flight (or land in alternate runway if its available) in case birds are detected over an area. This however, is dependent on a number of variables like fuel availability, flight schedule etc. There are some radar systems under development that could detect birds; however, these have not reached operational stage yet.