FIELD NOTES Doug Bell con't. June 25, 1986 imitation. The "Beach Club" caretaker was also there, John Lenery. About ½ hour after sunset (22:30) we could see, from their living room, Rhino Gulls returning from the sea to their burrows. They seemed to land heavily into the ground (5 yds to cliff from the house), and then just sit awhile in order to orient themselves. June 26, 1986 lumped again in the same spot - near the Walla Walla Trailer. Talked with Melinda, Mary & Joe Calush just a bit last night before returning retiring. Up today at 7:00. Tim offered to help me catch gulls with a new cannon-net set-up they developed, so I agreed. It took a while to set up, but we did this over a 3-egg nest in the same general area I had been trapping before. The nest was on a level patch. The cannon net was probably 1½ m². It was attached to 4 rings - one at each corner, and the rings were run down 2 1-meter wood dowels to lock behind 2 solenoid controlled holding pins. The rings were then put under tension by attaching the 2 leading rings to 12 foot bungee cords, which were staked into the ground, stretched. Activation of the solenoids, releasing the pins holding the net, was affected by circuit-closing pin; powered by a car battery. The whole operation worked very well. The female gull walked into her nest, looked a bit uneasy, but we