When I bought the house about 15 years ago the yard was nothing but a sickly looking expanse of grass, with a few trees. Now it is a wildlife haven full of wildflowers and native flowering trees. Lots of birds too. I try lots of things in my landscaped and see what happens. Sometimes, my experiments fail, and I learn something from it (not to do it any more). Sometimes they succeed, and I’ll inevitably do more of the same. I see what grows well. I see what the birds like to eat and where they nest, and what they ignore, etc.