The Statistical Probability of Love at First Sight - Pg 170

Back home in Connecticut, there's a bird bath just outside her kitchen window, which Hadley used to look out at while doing th dishes. The most frequent cisitors were a pair of sparrows who used to fight for their turn, one hopping around the edge and chirping loudly as the other bathed, and then vice versa. occasionally one would dart at the other, and both would flap their wings and lurch backward again, making ripples in the water. But although they generally spent the entire time squabbling, they always arrived together, and they always left together. 

There's something of that in Oliver now, a reckless confusion that makes him seem more lost than sad.