However, I have only ever seen the house sparrow nest in little nooks, places that act almost like cubbies. Where I live, the only bird that builds a nest of similar size is the House Finch, but they are tree nesters, so I have never seen them get overtaken by anything other than Brown-Headed Cowbirds. They are simply doing what the have adapted to doing. From a biological sense, they are really quite remarkable. You also have to remember that the House Sparrow and European Starling are just doing what they have learned to do to survive. If people hadn’t travelled from Europe to America, those little guys and other destructive birds wouldn’t have been able to come here. I think the point of Sue’s comment was to say that most invasive species are, in fact, caused by humans. They always have a “dome” or roof over the nest and they always have feathers in them. Identification of House Sparrow Nests and Eggs How horrible a death.įor more information on House Sparrow attacks and management of this invasive, aggressive bird, visit the Sialis website, they have much more detail. The Tree Swallow’s eggs were still intact.

Her head had been crushed in by the attacking beak of the aggressor. Underneath the nest was a dead female Tree Swallow. I removed the aggressor’s nest, tossed it on the ground and crushed the eggs. She built her nest on top of a Tree Sparrow nest.

Some years ago, I opened one of our nest boxes to find a House Sparrow sitting on her eggs. House Sparrows Attack and Kill Native Nesting Birds For a more detailed description of the bird go to this link at the Cornell Lab of Ornithology. Therefore it is an invasive, non-native species that is very difficult to manage. It is an aggressive species that will take over the nesting sites, territories, and food sources of native birds.

This bird is not native to North America. The House Sparrow is Not Native to North America Photo by my birding friend, Marshall Faintich.