The cheery and sociable house sparrow is more closely associated with ... It aggressively defends nest cavities, possibly to the detriment of native species. It is more gregarious in winter.

Learn how to identify a chipping sparrow. Meet the white-crowned sparrow and white-throated sparrow. This bird constructs a well-hidden ground or low nest of grasses, weed stems, leaves and bark ...

Despite their cute appearance, house sparrows are invasive and can cause more harm than good. Here's what to do to keep them ...