Do Sparrows Mate for Life?

The house sparrow is monogamous, and typically mates for life, but birds from pairs often engage in extra-pair copulations, so about 15% of house sparrow fledglings are unrelated to their mother's mate.

What happens when a sparrow loses its mate?

In fact, House Sparrows actually keep to the same mate for the rest of their lives. However, if a mate is lost, for whatever reason, during the breeding season, it could be replaced quite quickly. Courtship between House Sparrows usually starts as early as January and can continue on till the month of July.

Do sparrows return to the same nest?

House sparrows tend to stick close to home and do not migrate. In some cases, sparrows may reuse the same nest from year to year.