Only wild birds could carry the disease without getting sick, and so disseminate it far.
Some others who are reported sick were in contact with wild birds (or their carcasses).
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The wild birds are smaller, firmer, and have a rich, intense flavor since they are mostly dark meat.
They are interesting because this is the first time that differences in personality have been shown in wild birds.
The nesting platform is about half way down the tower and the falcons regularly take local, wild birds for food.
Bird-feeding and nature-gift store Wild Birds Unlimited has been around since 1981 and now has more than 260 locations.
People brought him wild birds and lizards from outside to treat, too.
But recent research has shown that some wild birds' patterns of flights and stopovers during migrations, or moulting times, differ between El Nino and La Nina years.
Wild birds can be stuffed and cooked like any other turkey, but you have to take more care not to overcook them or dry them out since they have no extra fat.
The Craigslist founder will be hosting a "remotely controllable robotic video camera" from the back deck of his San Francisco domicile, and interested users can log on to discover and classify wild birds in the Sutro Forest.
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As wild migratory birds will sometimes visit farms and as domestic flocks of ducks or chickens often live alongside pigs, especially in developing countries, this is quite feasible.
With Ms Brummer, there are 27 volunteers who help injured and orphaned wild animals and birds, nurturing them back to health and then releasing them back into the wild.
Hui said the pigeons were probably infected by wild or migratory birds, whose droppings can carry viruses.
Mvogbetsi Zoo is home to 35 chimpanzees, six gorillas, 10 other primates in addition to other wild mammals, reptiles and birds.
The iconic California condor was on the brink of extinction in 1987 when the surviving 22 birds in the wild were taken into captivity.
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Tests on captive vultures fed carcass flesh traced with the drug produced symptoms that were strikingly similar to those witnessed in sick birds in the wild.
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Earlier figures show there were 1, 000 of the birds living in the wild in 1980.
It is not the first time the trust has sent bred-birds back into the wild from Cornwall.
The turkey is the centrepiece of the US Thanksgiving tradition, though the specimens we eat today are a far cry from their hunted wild relatives, reminiscent of the birds early settlers would have found and Native Americans hunted.
In 1954 it became illegal to take birds' eggs from the wild.
He said the release of four pairs was the first time the birds had been introduced into the wild in central Bali.
Wild finches, meanwhile, have snakes and birds of prey to worry about.
There are giraffes aplenty, herds of antelope too, and wild pigs, monkeys, jackals and brilliantly coloured birds.
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Mallydams wildlife co-ordinator Richard Thompson said there was still a lot of work needed to ensure the birds recover well enough to be released into the wild.
The 352 hectares (870 acres) of woodland is said to be home to not only protected species such as the dormouse, but 75 species of birds, 23 species of native butterflies, the wild daffodil, wood anemone and enchanters' nightshade.
One of the rarest birds in the world has been released back into the wild, with help from conservationists from Chester Zoo.
The trust said money raised would be used to protect wild nests, feed underweight wild chicks, increase nest site availability and release captive-raised birds.
About 200 of the 300 birds rescued survived with many of them expected to be released back into the wild in the next two weeks.
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