Source: CDC Public Health Image Library

The image above shows mosquito eggs in a glass container.

After taking a blood meal the female mosquito rests for about 2-3 days while the eggs develop. The eggs are then oviposited in water.

Each female lays about 50-200 eggs each oviposition. The eggs have floats on them so that they stay at the water's suface. The time it takes for the eggs to hatch depends on temperature (longer time in colder temperatures). It usually takes about 2-3 days (but can be up to3 weeks).