Bald-faced hornet to laying eggs while the workers take over all other necessary housekeeping tasks. At some point, sometime before the midpoint of colony life, the colony will begin to invest energy in producing reproductives as well. This marks the transition into the reproductive stage. There is an extensive time period where both workers and reproductives are raised. Production of both castes limits the size of the work force. However, an early switching time is highly adaptive for social wasp colonies in limiting the risk of total loss. In a sampling of 50 colonies taken in Maryland in 1977, workers were produced
Bald Island area and taken to Bald Island. In 1993 the area was surveyed to show that at least two had survived. In 1993 another three males and three females have been relocated to Bald Island. The estimated population of calling male birds on Bald Island in 2004 is 59 individuals. Bald Island Bald Island is an island that is located in the Great Southern region of Western Australia. The island is offshore from Cheynes Beach and is a protected area managed by the Department of Parks and Wildlife. The island is a World Conservation Union Category IA nature reserve. (A Class