Why are House Sparrows an Invasive Species Where Introduced 2018

Find the answers to the following questions.
What is a house sparrow?
How do you identify house sparrows?
Why are House sparrows an invasive species where they’ve been introduced?
How do house sparrows outcompete native cavity nesting birds?
How can you control house sparrows?
What effects do house sparrows have on native birds?
I'll share some of my experiences with house sparrows as well.

Learn House Sparrow Control: http://bit.ly/HouseSparrowControl