Signs of infection in wildlife, like in humans, can range from no symptoms to severe symptoms of neurologic illness. Commonly reported signs in animals include weakness, stumbling, trembling, head tremors, inability to fly/walk, and a lack of awareness...
 As of January 2011 and since 1960*, the Bird Banding Laboratory (BBL) has received over 64 million banding records. Since the inception of the North American Bird Banding Program, the BBL has received over 4 million encounter records. On average, over...
There are seven species of Pacific salmon. Five of them occur in North American waters: chinook, coho, chum, sockeye, and pink. Masu and amago salmon occur only in Asia. There is one species of Atlantic salmon. Chinook/king salmon are the largest salmon...
Bird-to-human transmission of West Nile Virus is extremely rare and is only possible through contact with blood or other tissues of infected animals.The National Institute of Occupational Safety and Health (NIOSH) has detailed recommendations for ways...
Figuring out ways to estimate animal population sizes and their trends involves a lot of research time at the USGS Patuxent Wildlife Research Center. As you probably know, animals do not particularly want to be counted and it becomes quite a tricky...
There is a nation-wide decline in many bird species. This has been documented in annual Christmas Bird Counts, Breeding Bird Surveys, and reports from bird enthusiasts. It’s possible that West Nile Virus has been a contributing factor for some species...
African buffelgrass is spreading rapidly in the Sonoran Desert of southern Arizona, creating novel fire risks in both natural and urban areas and threatening conservation efforts. Left unchecked, buffelgrass will dominate the desert landscape and could...
Tamarisk is a familiar invasive species across the American West, occupying hundreds of thousands of acres of river floodplains since the 1960s. This shrub or small tree, which is also known as saltcedar, has successfully colonized a range of sites. It...
It is possible that there may have been a mutation in the virus that is causing a higher number of species to be affected this year. There is currently no evidence of significant mutation in the U.S. strain of WNV since its discovery in 1999, but many...
Imperiled Species is a general term used to identify species and populations of animals and plants that are in decline and may be in danger of extinction. Many imperiled species have legal protection under Federal laws such as the Endangered Species Act...