That's, well. That's a little less common behaviour with birds, and this time it keeps Eames' attention, glancing up at the gutter where a bird seems to be having one hell of a time. Even before he fully registers the white feathers, it's a sight that strikes Eames as being amusing, but when he does it's not a huge deductive leap to guess who that bird is and he laughs.

In fact, he helpfully drops the glamour so Mogget can be fully aware he's being laughed at.