The CDC and its Advisory Committee on Immunization Practices (ACIP) now recommend that all adolescents aged 11-18 get vaccinated against meningococcal disease. That's not a radical change from the CDC's old meningitis vaccination schedule. In the past, vaccination of adolescents and young adults was recommended to coincide with specific ages or events, the CDC's Tom Clark, MD, said at a news conference today.
Cool Facts. 1  American Crows congregate in large numbers in winter to sleep in communal roosts. 2  Young American Crows do not breed until they are at least two years old, and most do not breed until they are four or more. 3  In some areas, the American Crow has a double life.
If a doe is not mated, a second estrus occurs approximately 28 days later. Mating occurs from October to December and gestation is approximately 6 and a half months (200 days) . In her first year of breeding, a female generally has one fawn, but 2 per litter (occasionally 3 or 4) are born in subsequent years.Fawns are able to walk at birth and nibble on vegetation only a few days later.ating occurs from October to December and gestation is approximately 6 and a half months (200 days) . In her first year of breeding, a female generally has one fawn, but 2 per litter (occasionally 3 or 4) are born in subsequent years. Fawns are able to walk at birth and nibble on vegetation only a few days later.