Every bird lays eggs. Mammals give birth. The only two mammals that DON'T give birth is the platypus and anteater.
Birds Always lay eggs. Mammals have live births/ feed their young with breast milk.
Every birds lay eggs . There is no such thing as a bird does not lay eggs . Birds are so beautiful!
Female sparrow give birth to baby sparrow.
It lay eggs
Sparrows are hatched out of eggs. I too have birdhouses, which I do not like to disturb but when you clean them out in winter, you will find tiny pieces of eggshell. Birds are awesome.