This is the second alien invasion story where birds are involved that I've read in as many months, which is odd because I usually shy away from the genre. But this one came very well recommended and rightly so. Yancey writes with impressive conviction from the beginning and you buy into his premise and characters immediately. It's a very well told story and, as a reader, I found myself more than willing to forgive him the occasional bending of the laws of probability for the sake of drama.