The baby probably just felt “not right” to him. It didn’t smell like food—think of the smell of human baby, with powder, laundry softener, diaper, baby poop, and lotions—and the crackling of the disposable diaper is not consistent with typical eagle prey, and had clothes instead of fur, and it just didn’t register like a rabbit or chihuahua. he might have just thought, “WTH, all these humans are screaming, this is more trouble than it’s worth. I’m gonna go find me a Yorkie to snack on.”
I bet that cute little red hat with the goofy eyeballs attracted the eagle somehow.