It's a cloud, a tornado , a flock of birds?

In this video you're seeing Starling Birds in a field located in Isreal; the interesting thing about this, is that these rare birds have just recently shown up and have been absent from the area for more than 20 years.

These birds use synchronized flying for two main reasons: hunting and survival. When one bird finds food the rest follow in almost perfect formation. It's used as a defense mechanism because the bigger the organism looks, the less likely that other birds will even attempt to attack.

The birds used to migrate from Europe and Russia to Israel by the millions in the early 90′s, however the birds started disappearing. The disappearance could have due to global warming and it's effects on suitable habit and effects on migration in wildlife. However, they are suddenly back and making bird watchers and photographers very happy.

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