Ricky Harmer, age 11, of Mission Viejo, Calif., for his question:

WHERE DO CROWS BUILD THEIR NESTS?

Crows are considered by many to be the most intelligent of all birds. While the scientists have no real evidence that a bird is able to think, they agree birds certainly do have mental qualities that can be demonstrated. And Mr. Crow is out in front at the report card time.

Most members of the crow family are tree nesters with some choosing to build on cliff ledges. They build substantial open nests of twigs and sticks.

Mother crow does all of the incubation while from three to five eggs are being hatched. The man in the family brings mother food. Eggs hatch after about 19 days and the young crows are ready to head out into the world after three weeks of care in the nest.