Feather by exposure to emulsifying agents due to human pollution. Feathers can then become waterlogged, causing the bird to sink. It is also very difficult to clean and rescue birds whose feathers have been fouled by oil spills. The feathers of cormorants soak up water and help to reduce buoyancy, thereby allowing the birds to swim submerged. Bristles are stiff, tapering feathers with a large rachis but few barbs. Rictal bristles are found around the eyes and bill. They may serve a similar purpose to eyelashes and vibrissae in mammals. Although there is as yet no clear evidence, it has been
Calamus, Wisconsin Calamus, Wisconsin Calamus is a town in Dodge County, Wisconsin, United States. The population was 1,005 at the 2000 census. The unincorporated community of South Beaver Dam is located in the town. The unincorporated community of Lost Lake is also located partially in the town. The town was founded on January 22, 1846. According to the United States Census Bureau, the town has a total area of 36.5 square miles (94.7 km²), of which, 36.1 square miles (93.4 km²) of it is land and 0.5 square miles (1.2 km²) of it (1.29%) is water. As of the census of 2000,