But some wildlife officials said the ban came too late - after the southern Asia natives had begun breeding in the Everglades.
Last year's count introduced a few new species to North America, including the exotic purple swamphen, an escapee now breeding in the Florida Everglades.
According to Aqua Bounty, the engineered salmon are all female, sterile, and raised in physically contained facilities, so the chance of the fish breeding in the wild is negligible.
In 2008, birdwatchers' hopes of snowy owls breeding in the UK for first time in more than 30 years were raised when the bird was joined by a female.
The Chiterns Conservation Board said the area now had the highest breeding density of red kites in England and added there could be more than 600 breeding pairs in the area.
Bitterns recolonised the UK in 1911, when they were found breeding again in the Norfolk Broads, but were pushed towards extinction again in this country in the 1990s.
The lesser black-backed gull and the herring gull are protected species in the EU. There are 6, 500 breeding pairs in the whole of Flanders, according to Eric Stienen, an expert in colony birds at the Flemish Institute for Nature and Forests.
With many mouths to feed but a good deal of free labor--Kenny is the youngest of nine children--the family cast about for a new business opportunity and started breeding guppies in the concrete pigpens.
Another theory is that the birds may have fallen victim to hunting, development or changes in farming along their 6, 000km (3, 600 mile) migration route to breeding grounds in the Russian Arctic.
He is believed to have come from a breeding colony in the sub-Antarctic Macquarie Island.
Two different shark subspecies appear to be breeding together in the waters off the coast of Australia.
With less than 150 breeding females in the world, Whitebred Shorthorns are on the Rare Breeds Survival Trust's critical list.
Sceptics point out that if big cats have been surviving, and breeding, in the wild for all this time, they only have a natural life span of some 20 years.
With Black Caviar's form seemingly better than ever despite her age, her connections have hinted that a return to Royal Ascot, scene of her narrowest-ever victory, may be on the cards later this summer before a rendezvous with Frankel in the breeding shed in what would surely be considered the racing world's own royal wedding.
The current breeding population is increasing in the UK and originates from birds that escaped captivity or were deliberately released.
The new "watery escalator" will allow the fish to reach their breeding sites in tributaries among the Cheviot Hills.
The 23-year-old hails from a village in the Rift Valley, the traditional breeding ground for the seemingly endless stream of Kenyan distance runners who have enjoyed such success in distances from 800 meters to the marathon.
CNN: YouTube lessons to Olympic final: Kenya's javelin pioneer
Rising water temperatures have led to sudden and dramatic changes - with the plankton breeding at the wrong time, and in the wrong place, threatening species like cod.
Maj Steve Coleman from the shelter said that was due to some irresponsible breeding of cats which resulted in the market being saturated.
"We must also look at possibilities of breeding the rhino in our communities, " he added.
Ospreys have returned to a small breeding colony in Northumberland for the fourth year in a row.
BBC: Ospreys back in Kielder, Northumberland for fourth year
He has a date in the breeding shed as early as next week with the 2011 Horse of the Year, Havre de Grace.
WSJ: Tapit: Horse Racing's Top Bachelor��2013 Kentucky Derby
"I don't think we have ever had as intensive and difficult to put out fires this late in the breeding season, " she said.
Prince Philip is said to be a fan of the sturdy breed with two of his animals, a gift from the Shah of Iran, having a fundamental place in the breeding programme.
BBC: NEWS | UK | England | Leicestershire | How DNA saved an 'extinct' breed
Like many other great young racehorses who have had short careers, I'll Have Another is likely to be a greater success for its owners in the breeding shed than it would have been on the track.
In the 1990s, the first white rhinos were imported from South Africa and the results of the breeding programme saw the animals transferred to other reserves in Kenya, including Lake Nakuru National Park, Sweetwaters Game Reserve and Lewa Downs Conservancy.
Despite many subsequent expeditions, the bird's main breeding grounds, thought to lie in the wildernesses of western Siberia or northern Kazakhstan, have eluded detection.
The water is also an excellent breeding ground for mosquitoes, particularly in the warm, wet climate of the Gulf Coast, which could mean a spike in mosquito-borne illnesses such as West Nile virus.
The problem is so rampant in central Kenya, where breeders have made in-roads into breeding rhinos in captivity on private reserves, that during the monthly full moon cycle, when poachers are not reliant on torches or headlamps for light, the rhinos need to be protected 24 hours a day.
应用推荐