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The drinking bird is a heat engine that exploits a temperature difference to convert heat energy to a pressure difference within the device, and performs mechanical work. Like all heat engines, the drinking bird works through a thermodynamic cycle. The initial state of the system is a bird with a wet head oriented vertically.
Linear breeding territories are established by pairs of dippers along suitable rivers, and maintained against incursion by other dippers. Within their territory the pair must have a good nest site and roost sites, but the main factor affecting the length of the territory is the availability of sufficient food to feed themselves and their broods.
After the bird’s beak is dipped into a cup of water, it springs back into its natural upstanding position, and the water begins to evaporate and cool the head.
The crop (also the croup, the craw, the ingluvies, and the sublingual pouch) is a thin-walled, expanded portion of the alimentary tract, which is used for the storage of food before digestion. The crop is an anatomical structure in vertebrate animals, such as birds , and invertebrate animals, such as gastropods (snails and slugs), earthworms ...
When it comes to avian flu risk levels, buying eggs and poultry from the supermarket is on the lower end of the spectrum. The CDC argues that there is no evidence that food will transmit H5N1—as ...
CHICAGO (Reuters) -The U.S. government said on Monday it is collecting samples of ground beef at retail stores in states with outbreaks of bird flu in dairy cows for testing, but remains confident ...
Food safety in the United States relates to the processing, packaging, and storage of food in a way that prevents food-borne illness within the United States. [1] The beginning of regulation on food safety in the United States started in the early 1900s, when several outbreaks sparked the need for litigation managing food in the food industry.
The European food safety agency (EFSA) is recommending preventative bird flu vaccination for susceptible poultry in areas with a high risk of transmission to stem the spread of a virus that killed ...