During the first trimester of pregnancy 1  : Up to 25% of pregnant women have some spotting or light vaginal bleeding. 2  Very early spotting sometimes occurs when the fertilized egg implants in the uterus.
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General biology and habitat. Male chickens are known as roosters (in the U.S., Canada and Australia), cocks, or cockerels. Castrated roosters are called capons. Female chickens are known as hens, or 'chooks' in Australian English.Young females are known as pullets.Roosters can usually be differentiated from hens by their striking plumage, marked by long flowing tails and bright pointed feathers on their necks.astrated roosters are called capons. Female chickens are known as hens, or 'chooks' in Australian English. Young females are known as pullets. Roosters can usually be differentiated from hens by their striking plumage, marked by long flowing tails and bright pointed feathers on their necks.