What key ecological adaptation separates the House Sparrow's success from many native songbirds?

Answer

Capitalizing on spilled or scattered food sources discarded or wasted by human activity.

The instinct to capitalize on spilled or scattered food sources at ground level, often waste from human activity, is a key ecological adaptation distinguishing them from many native songbirds.

What key ecological adaptation separates the House Sparrow's success from many native songbirds?
dietbirdfeedgroundHouse Sparrow