IDAHO - December 13, 2006 - Officials scrambled to determine what has caused the deaths of thousands of mallard ducks in south-central Idaho near the Utah border. Although wildlife experts are downplaying any links to bird flu, they have sent samples to government labs to test for the deadly H5N1 flu strain, among other pathogens. Wildlife officials are calling the massive die-off alarming, with the number of dead mallards rising from 1,000 on Tuesday to more than 2,000 by Wednesday afternoon. "We've never seen anything like this - ever." Preliminary findings by state veterinarians suggest the mallards succumbed to a bacterial infection, officials said. They said it was unclear why a similar outbreak had never before occurred in Idaho. The only mallard die-off roughly equivalent in recent years happened in Waterloo, Iowa in 2005, when 500 ducks died from a fungus they contracted by eating moldy grain. Early clues suggest the outbreak in Idaho is not linked to insecticides applied to surrounding croplands because it is not affecting other bird species or predators feeding on the dead ducks. EARLIER INSTANCES OF MASS BIRD DEATHS - July 5, 2006 - CALIFORNIA - Dead, sickly birds wash up on Calif. beach. Bird rescuers believe dozens of dead and sickly baby terns washed up suddenly on beaches here after something scared them out of their nests on an abandoned barge and into the water, where they couldn't swim. Rescuers collected the bodies of about 200 Caspian and elegant tern chicks after getting calls from lifeguards earlier in the day on June 28th. The birds were all about a month old and many hadn't even grown feathers yet. The die-off comes just days after an unusual number of starving and weak baby pelicans showed up on area beaches in northern California. 3/29/06 - WEST COAST OF NORTH AMERICA - Once again, things are starting to look weird along the West Coast. A rash of BIRD DEATHS has scientists wondering if they're seeing a repeat of last year, when they were alarmed by throngs of dead birds washing up on beaches, underfed whales and the failure of Washington's largest seabird-nesting colony, among other developments. Like last year, scientists say, this year's bird deaths appear related to changes in the marine food web that they still don't understand but that look as if they are related to unusual weather. Many are so scrawny that researchers say it's virtually a foregone conclusion that they starved to death. Dead birds have been turning up along the Pacific coast from the Columbia River south to about Newport, Ore., and in British Columbia. "There's something happening. ... We've got signals that there's something amiss." Researchers are convinced that much of what they saw in 2005 was related to an interruption of the normal spring weather patterns, with overly warm, nutrition-poor ocean water hanging around when cold, food-filled ocean water normally moves in. They say it's easy to see why that happened: Wind that usually kicks up this time of year failed to do so. But they don't know why the wind didn't blow. 3/22/06 - OREGON - hundreds of seabirds have been washing up dead among the plastic bottles, styrofoam, wood and other junk in the driftline on South Coast beaches this month. Hundreds of carcasses of rhinoceros auklets, possibly as many as 20 or 30 per mile, have been reported since Sunday, the 12th. Some are just a jumble of bones or scrap of skin with a beak or legs attached. Those are the hard ones for people to identify. Drizzle, gusty winds and ultimately pounding storms have smashed into Oregon off and on for almost three months. “The questions in my mind are: Is this something that's widespread in Oregon? Is it a freak event like a storm or something that's going to last longer?” asked a seabird researcher. There were no reports of an increase of dead auklets washing up on Washington's shores, nor in California. Populations at seabird colonies off San Francisco look normal at the start of breeding season. Rhinoceros auklets live most of their lives at sea. They are scrappy, constant flyers. They are deep divers. Their health can give clues about the health of the ocean's food chain. Countless thousands likely winter in the waters off Oregon, though no one knows for sure how many because few folks venture tens and hundreds of miles onto the stormy Pacific for winter research. And as to whether the die-off will be harmful, no one knows. One man has checked the same stretch of beach every day for almost thirty years. He found 45 rhino auks in the first 13 days of the month. It blew apart his record over the past 28 years that was for 13 dead ones for the entire month of March. “This isn't a storm kind of incident. The birds we checked are very thin. At the time they first showed, there was no storm.” February 15, 2006 - ILLINOIS - SNOW GEESE - dead snow geese found southeast of Springfield spread across 4 miles in early January probably died after severe wather caused the birds to crash into the ground. The storm that killed the birds was probably the same one that created a "microburst" of straight-line winds that toppled utility poles and damaged mobile homes on January 2. The birds were not poisoned, as many people first suspected. "The medical examiner's report said that the lesions observed in the snow geese were consistent with the birds falling from the sky, rupturing internal organs and bleeding internally. " Finding the dead birds spread across a large area was strange, because birds that have been poisoned often are found clustered together. The examiner said this is the first time in 14 years he has heard of a case of bird deaths that turned out to be weather-related. “This flock was probably in the wrong place at the wrong time.” While severe weather may have been the cause this time, people who discover large numbers of dead birds should not dismiss the event as normal.