Consider removal of overgrown, unattractive plants that offer little wildlife value. Add to your plan a little at a time. Enjoy a work in progress while reducing the area of lawn. Plant more than one of a plant, as larger patches are more visible to birds. Plant them in an irregular pattern so that it looks more natural.
Birds eat the treated insects and berries.
Remember, numerous plant species attract a greater variety of birds and other wildlife. Check links below to find out more and where you can find native plants.