Doug Tallamy has been a passionate advocate for expanding our landscapes to support native insects, and therefore birds, etc.
In this piece in the NYT, he made the case, again. Links to the article appear below.
This is good stuff. We need to be good stewards of our gardens, adding back more native plants, and embracing even the less than lovely natives (hmm, black cherries and pin oak are species I have a hard time convincing people to add, as well as sweetgums and sycamores, for non-mulched areas.)