Health Issues Which May Affect This Animal
What Causes This Disease?Aspergillosis is caused by a fungus, Aspergillus fumigatus. The fungus is present in the environment. In birds that are immunocompromised or stressed, the fungal spores can invade the respiratory tissues and create matts of fungal hyphae.
Where Is The Disease Found?Aspergillosis is found in soil across most of North America and been associated with mortality events in many areas in both waterfowl and raptors. Aspergillosis had been documented in waterfowl and raptors in Idaho.
Signs of DiseaseBirds affected by aspergillosis are usually thin, lethargic and may present with open mouth breathing. Aspergillosis tends to be a chronic disease but can develop quickly depending on the number of spores inhaled. In birds that are chronically infected, either yellow to white thickened areas or thick mats of white to green fungus are present in the lungs and airsacs.
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What Causes This Disease?Avian botulism is caused by the ingestion of a toxin produced by the bacteria, Clostridium botulinum type C. Avian botulism outbreaks are most common in August, September, and October throughout North America when conditions are favorable for bacterial growth.
Where Is The Disease Found?The bacteria that cause botulism is found throughout North America, except Alaska. It has been documented in many species of waterfowl in Idaho.
Signs of DiseaseToxins produced by C. botulinum cause paralysis in birds which is often referred as “limber neck”. Paralysis usually starts in the legs and wings, then progresses to the neck, making it difficult for birds to hold up their heads. Since the birds can’t hold up their heads, the most common cause of death from botulism is drowning. Birds that do not drown usually eventually die of respiratory failure.
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What Causes This Disease?Avian cholera is a contagious bacterial disease caused by Pasteurella multocida. The primary means of the infection is exposure to dead birds. P. multocida can linger for several weeks in water and wetlands where affected birds have died. Scavengers can also spread the disease further by tearing open carcasses, and releasing more bacteria from the carcass into the environment.
Where Is The Disease Found?Avian cholera can be found throughout North America and has been documented in waterfowl in Idaho.
Signs of DiseaseAvian cholera can occur year-round, but is more apt to occur during spring migration. Sick birds are rarely seen because the disease is usually rapidly fatal. Sick birds can show signs of sluggish behavior, drowsiness, loss of fear of people, erratic flight, or flying into the ground or water. Some affected birds have mucous coming from the nose and mouth, and yellow or blood stained feces. Because they are so sick, captured birds often die within a few minutes. Because birds die quickly, they often have no lesions on the organs. If the bird has been infected for a while it may have small white to yellow spots on the liver and red spots on the heart and possibly the gizzard.
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What Causes This Disease?Avian influenza is caused by an influenza type A virus. There are 144 different types of avian influenza viruses known. Avian Influenza viruses are categorized into two groups, high pathogenity and low pathogenicity, based on the extent of illness and death they cause in domestic poultry.
Where Is The Disease Found?Avian influenza is found worldwide including North America. The disease is found in domestic poultry and wild waterfowl, typically in the low pathogenicity forms. Avian Influenza has been found waterfowl and raptors in Idaho.
Signs of DiseaseAvian influenza can cause a variety of clinical signs in birds including lack of energy and appetite, decreased egg production, soft-shelled or misshapen eggs, swelling of the head, eyelids, comb, wattles, and hocks, purple discoloration of the wattles, combs, and legs, nasal discharge, coughing, sneezing, lack of coordination, diarrhea, or sudden death without clinical signs. At necropsy, nasal discharge, greenish, watery diarrhea and swelling around the eyes and neck can be seen. In addition, multifocal necrosis of the pancreas and liver, pulmonary congestion and edema, subepicardial hemorrhage, and myocarditis can be seen.
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I received a phone call this fall from a concerned citizen reporting a couple of dead Canada geese near his property around the Rathdrum prairie. After taking notes regarding the situation I told him to keep an eye on things and let me know if any more dead animals turn up.
**Attention Youth Hunters**
If you or a youngster you know are interested in waterfowl hunting, come join IDFG at the Clark Fork Delta on September 30th for a day of learning methods and techniques while in the duck blind. All participants will be paired up with experienced waterfowl hunters ready to mentor and share their wealth of hunting knowledge. The kids will be out at first light for a chance at some quackers and honkers, spend a couple hours in the blind, and will come back for a lunch and demonstrations on calling, dog retrieving, and duck identification.
The 2017 mourning dove, sandhill crane, and early Canada goose seasons open Friday, September 1.
The mourning dove season runs through October 30, with a daily bag limit of 15 and a possession limit of 45.
Eurasian collared-doves are an introduced species that have expanded their range into Idaho. There is no daily bag or possession limit for Eurasian collared-doves. They will not count as part of the aggregate bag limit of mourning doves as long as they are identifiable.
The food plots have been planted and are now popping out of the ground at Niagara Springs WMA. Food plots of sorghum, millet, sunflowers, and soybeans were all planted this year to provide forage and cover for both game and nongame wildlife.
Fish and Game is asking the public for information regarding the recent poaching and wasting of five Canada geese, discovered February 17th at Mountain Home Reservoir. The birds were shot and disposed of sometime the week before.
The Idaho Department of Fish and Game would like to gather public comments on a proposal to possibly eliminate the goose hunting closure on the Snake River upstream of Milner Dam near Burley.
Hunters are required to obtain landowner permission to access the property, which is east of Gridley Island Bridge between the south bank of the Snake River and Highway 30. This land is the only land now open in the closure area south of the Snake River.
The 2016 mourning dove, sandhill crane, and early Canada goose seasons open Thursday, September 1.