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6 THE CONDOR I VoL. VI displayed her to good advantage and pressed the bulb. Another occasion I must always remember with keenest regret was when the presence of a Baur mocker should have afforded a couple of extremely interesting photographs. The story runs like this. After spending a forenoon tramping over the piled up lava and obtaining various photographs, I reached the cliff above the beach where our boat was waiting. As I sprang across a chasm a night heron jumped from a well built nest and stood on a limb of the tree squawking at me. Seeing a chance to get bird, eggs and nest on one plate the opportunity was eagerly grasped. But much to my disappointment after I had moved up closer for the third time and was beautifully situated for a picture, the bird deliberately hopped down and walked away. A nearby mocker however, seeing my evident anxiety, came to the rescue, and dropping down into the nest commenced picking at the eggs! This would have made a good picture, and I was only eight feet away, but the heron, seeing the impudence of Nesomimus, threw fear of the camera to the winds and stepping back to the edge of the nest afforded me the exquisite pleasure of pressing the bulb just as she was making a stealthy poke at the intent mocker. Tiffs was so NE?iOMIMU?; IBAURI, TOWER ISLAND fine a subject, that I changed the camera slightly, focused carefnlly, rapidly slid in the plate-holder, yanked out the slide and obtained a view of heron and mocker fighting, on the same plate with the first picture! I finally managed to get another view showing the mocker still in the nest with the heron in the background. ? Most of the small birds belong to the genera Geospiza or Certhidea, and as they build domed nests the birds are usually concealed from view while nesting. Of the other three or four genera, Mjqarchus builds in cavities of trees and L)endro- ica so high up on slender limbs that photographing the nest is difficult. Pyroceph- alus, the handsome little flycatcher, builds a pretty nest and can easily be photo- graphed on it whenever it is within reach. But when one starts on the water birds, subjects inexhaustible are ever pres- ent, and pictures without number can be secured showing bird life in all phases. The bird affording the greatest variety of poses and nesting situations is the Neboux booby (Sula nebouxi). We were greatly surprised on Daphne Island to a See Bird 1?o? e, Dec., ?9o3/or this picture.--l?;t?.