The birds arrived, and then left again, but they'll be back

We have birds at the feeders now every morning. Finally. They arrived Friday. Liam is fascinated. So far we've seen: house finches, 2 kinds of chickadees, and a nuthatch. Plus crows (although they don't come to the feeders). Liam is learning to sit quietly and watch for the birds. This has the promise of being very useful, except, so far, the birds are not buying it. As soon as Liam appears with his face pressed to the window they take off for the apple tree across the yard and wait for him to leave. Luckily, he also can see the feeders from his highchair in the kitchen (oh, the wonders of a small house), so he gets a dose of bird viewing from there. Liam's curly hair---so soft and sweet is one of the nicest things present in my life.