“What should I do to keep house sparrows from tormenting wrens and bluebirds? Should I take the birdhouses down?” asks Ruth Armstrong of Niles, Michigan. Many people love to attract nesting bluebirds.

The house sparrow is a highly invasive pest in North Carolina, and bluebird enthusiasts frequently throw their eggs out and remove their nests to keep them from overtaking the nestboxes that bluebirds ...

A simple length of fishing line could help give Bermuda’s bluebirds a better chance of holding off house sparrows that aggressively take over their nesting sites. Sparrows have threatened the native ...

Researchers used discarded eggs from invasive house sparrows to test for heavy metal contaminants. A citizen-science project called "Sparrow Swap" engaged bluebird enthusiasts to collect over 2,000 ...