Stopped by Lake Nockamixon "on my way" to work this morning. No crossbills at 9am, but two flyover siskins. Went down to the marina and saw the Red-necked Grebe out in the open water. Back at the crossbill site at 9:15 I immediately heard the cracking of spruce cones as I got out of the car. The flock of White-winged Crossbills was pretty easy to see in the top of a spruce, but only for about 20 seconds. 25 birds took off calling, circled the grove, and headed off--apparently startled by a gull flying low overhead. Then it was off to work. Not a bad way to start the morning!