No unhealthy bird could possibly grow such an appendage, so it is a clear sign of good genes.
But this time the two Britons say they are in no doubt the bird they sighted really is the one last seen in 1850.
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On Friday, Beijing News reported that people carrying the H7N9 virus may have entered Beijing in recent days from East China due to an increased flow of tourists, but no cases of bird flu have been reported there as of Friday.
There had been no recorded cases of bird flu infecting people until an outbreak of H5N1 among poultry in Hong Kong in 1997.
But whatever Britain's misgivings about granting independence to this sandcastle, with all the privileges and status of a sovereign state, it had no doubt that Vere Bird was its natural leader.
The inquest heard Lee Turner, who was on holiday with his wife and their two sons aged three and four, offered to help but Bird mumbled "no, go".
Bird feathers held no interest, shells rarely caught her attention.
Investigators from the Department of Health found no evidence that the outbreak of bird flu had anything to do with breaches in hygiene and food safety rules.
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There is no ban on meetings taking place, and foxes can be killed by a bird of prey or shot - but only if no more than two dogs are involved.
We spent hours watching seals and whales (alas, no bears or walruses), visited bird cliffs, climbed icebergs and learned how to build an igloo.
According to bird experts, there is technically no such thing as a seagull.
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Well, when it comes to Big Bird, Oscar the Grouch is no match.
Globally, the main threats facing bird populations continued to be agriculture, deforestation and invasive species, Mr Bird explained, adding that there was no sign of the threats disappearing in the near future.
Meng Xianghu, a stall owner at another pigeon market, the Wanliu Tonghe market in Beijing, isn't questioning the government's decision to stop bird sales, even though there is no evidence that H7N9 has spread to Beijing.
Not only were The Trashmen arguably the best surf band ever to come out of Minneapolis, but with their 1964 hit "Surfin' Bird, " they did something that no other band before or since has ever truly done.
There's no saying who might ultimately bid on this elephant bird egg, but, clearly, it takes an eccentric -- someone prone to spending money on things that don't serve a greater purpose beyond just being weird for the sake of weird.
While this is a new strain of bird flu, WHO said there has been no evidence of human to human transmission.
He includes the 1918 flu pandemic as an analogy to possible bird flu and concludes it would have virtually no impact.
I've one hen left that has a nest inside the bird room and she's now got no mate so she's left the eggs.
As a former head of the constitutional court and as the main architect of the new democratic system in Hungary after 1990, this bird knew the lie of the land like no other.
Turning to China's bird flu outbreak, the government says there is still no evidence of human-to-human transmission of the H7N9 virus but does not rule out a further spread of outbreaks.
Images taken by the Cassini spacecraft provide bird's-eye views of the terrain, with no details about a landform's elevation or depth.
On a recent flyover, Taylor and fellow observer Zach Swaim photographed a new mother, No. 2660, who's named Gannet because she has a bird-like pattern on her head.
Concern about the flu has been fanned by reports of bird flu strains that have infected humans, although there's no evidence yet that they've been transmitted from one person to another.
The blackcap (Sylvia atricapilla), a migrant bird common in Europe that breeds in gardens, once had virtually no avian malaria but a study in 1999 showed nearly 4% had the disease.
Amid growing public concern over the outbreak, health authorities have promised transparency and stressed that there is no evidence of human-to-human transmission of the new strain of deadly bird flu, China Daily reports.
They say they can keep rain from falling on the Bird's Nest Stadium during the opening ceremony - the stadium has no roof - but scientists elsewhere are dubious about that kind of technology.
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