The birds also form temporary flocks when engaged in the same activity.

And when you build those three rules in, automatically you start to see swarms that look very much like fish schools or bird flocks.

It is not to be confused with bird calls which are used for alarms and contact and are especially important in birds that feed or migrate in flocks.

Supporters of factory farming often point out that bird flu can be spread by free range flocks, or by wild ducks and other migrating birds, who may join the free range birds to feed with them or drop their feces while flying overhead.

These are the sounds you would expect, but they are also the sounds of dissonant concerts of a flock of birds screeching in the night, the high pitched honest cries of children and the thunderous, unbearable silence.

Fighter squadrons Mirage 2000D, SAM sqns.

From May to November 1944 the Greek squadrons continued in Italy.

Three squadrons are operating with this type of F 16s.

At times, they gather in flocks of a hundred or more.

A high diversity and range of birds live in the peninsula as well at least 181 bird species, 66 of which migratory, live in the area, including the Antarctic pigeon.

In 2003, more than 75 of all flocks were force moulted in the US.

Birds, especially seabirds, are an important part of Iceland's animal life.

The girl released the birds from the cage.

A bird adapted strain of H5N1, called HPAI A(H5N1) for highly pathogenic avian influenza virus of type A of subtype H5N1, is the highly pathogenic causative agent of H5N1 flu, commonly known as avian influenza ( bird flu ).

Birds sing.

Birds fly.

Who Pays for Bird Flu?

From 1 to 23 November, Russian squadrons were dispatched into the Black Sea to establish control of the sea.

Birds lay eggs.

These birds are likely cases of xanthochromism.

The reserve has over 300 species of bird, and is one of the most important sites for bird conservation in mainland Africa.

Most birdwatchers pursue this activity for recreational or social reasons, unlike ornithologists, who engage in the study of birds using formal scientific methods.

H7N9 is a bird flu strain of the species Influenza virus A (avian influenza virus or bird flu virus).

If you look around at the birds, there are a lot of birds in the Gulf that concentrate in the Gulf at certain times of the year, but then leave.

Their rostrum and cranium are covered with tens of thousands of sensory receptors for locating swarms of zooplankton, which is their primary food source.

Birds fly long distances.

Birds of a feather flock together.

She wrote a book about birds.

Corvoidea is a superfamily of birds in the order of Passeriformes.

The most important part of the fishing operation is searching for the fish shoals and assessing their size and direction of movement.

Three Hellenic squadrons were built, which were operating under the command of the British RAF.

In summer 1943 the Greek Squadrons participated in the attack against the German Wehrmacht on the island of Crete.

Ecologically, Lake Tana is home to rare and endangered bird species such as the black crowned crane and also hosts several migratory birds.

Well, as an ornithologist, I can tell you that birds fly, and that and that booming a bird colony doesn't do it it doesn't do it.

The Iraqi government dismantled in October 2006 a complete police brigade because they had connections with sectarian death squadrons.

These birds mainly live off arthropods and larvae.

A robot that flies like a bird

we have the possibility to fly like a bird.

Birds sing early in the morning.

Birds sing early in the morning.

The birds flew away in all directions.

She is keen on birds and flowers.

My heart ached for the dying birds.

Special event on the theme of Avian flu

Special event on Avian flu