Birders are often not enamored of House Wrens. This wren has increased in numbers with the fragmentation of North American forests. At they increase, they displace Bewick's Wrens. Worse yet, they take over other cavity inhabiting species' nests (including Prothonotary Warblers, Tree Swallows, chickadees, and bluebirds) by destroying their competitors' eggs or killing nestlings. The House Wren, indeed, can be responsible for the majority of nesting failures for these species. Not nice!
I enjoy their energetic, bubbly, flute-like song. Others, however, describe it as "a long series of short, not very musical notes poured out in a rapid burst that suddenly rises and falls...it is a persistent singer, the the effect is remarkable more for bubbling energy than beauty" (Pough, 1949, Audubon Land Bird Guide). You can decide by clicking here.