164 Journal R.E. Johnson 1968 July 12 Amchitka Island, Alaska be readily seen that the spacing of nests in areas where we have walked the shore is much closer than where the helicopter was the only means of locating nests. This strongly suggests that a quick scan with the helicopter does not result in an accurate census. On the other hand, walking the shore- line quickly reveals whether a pair of eagles is nesting via their behavior & a search will lead to the nest. From the helicopter many adults were seen between nest locations whereas when walking almost every adult eagle was found to have a nest. I believe, however, that the helicopter could be much more effectively used than we used it. A slow rate of search via helicopter should turn up most of the nests in an area and it would be much faster than walking the shoreline on foot. The helicopter pilot seemed reluctant to believe that a slow speed was of any value. The point would best be made to him before any subsequent trip, that we wish to cover a certain unit of shoreline in some definite amount of time so that he doesn't set off as if on a cross- country race. The ideal rate for the stretch from North Hunger to the coast near site E is probably 1 1/2 hrs whereas the copter can easily make this in 1/2 hour while following the shoreline. In the future it would be best to census