Pretty decent book...

My book of choice is "Miss Peregrine's Home for Peculiar Children", and so far I love it. It's written in an easy-to-read way, where my brain can keep the flow going. In other words, the sentences make sense to me. Jacob's grandfather, Abraham, shared stories of his childhood with him. The stories being told to this 6 year old boy were easily believable at this age, but as he grew up, he realized that the stories, and pictures were fake. Abe was getting pretty old, and he started "losing it". He called Jacob at work asking where the key was, referring to the key that opened his locker full of guns and knives. Abe claimed the "monsters" from his childhood were after him. Jacob thought he was just senile, but still, he left work at his uncle's "Smart Aid" franchise early that day to check on him. Upon his arrival, he noticed the house was trashed by what looked like robbers, but really it was his grandpa looking for the key. Eventually they made there way to the backyard, then to the woods; Where Abe's trail led them. Jacob found his grandpa laying face down in the dirt, and soon after, he died. Now, because of the trauma that Jacob suffered, he has to go see a psychiatrist. That's about all I've read so far. A question i have is: What do Abe's last words refer to? Right before he died he told Jacob "Find the bird. In the loop. On the other side of the old man's grave. September third, 1940." I really would like to know what all that means...