R.Clapp 1964 Oct. 25 Erikub Atoll, Marshall Islands Population Estimates for Enero Island Species RBC GW PL INH KEA Revised B.T.Curlew 50 45 20. 40 30 40-50 G.Plover 75 60-70 70 30 -- 60-70 R.Turnstone 75 75 75 30 -- 75 B.N.Tern 1 1 -- 2 -- 2 Fairy Tern 1000 400 300-400 300 200 400-500 Gr.Frigate 1 --- --- -- 11 1 Reef Heron 1 --- --- 1 -- 1 C.Noddy 100 800 80-100 50 50 100 H.Noddy 500 250 150 150 75 150-250 W.T.T.B. 4 4 -- -- -- 4 The White-tailed Tropicbirds were seen flying over the island and not on the island proper. Not less than 2 Hawaiian Noddies were seen on nest and a single Fairy Tern egg opened for examination proved to be almost ready to hatch. Population Estimates for Aradojiren Island Species RBC GW PL INH KEA ABA Revised Cr.Tern 3 -- -- 3 --- --- 3 W.Tattler 3 3 3 3 --- --- 3 R.Turnstone 20 5-6 5 10 --- --- 10-20 G.Plover 20 12-13 15.25 --- --- --- 15-20 Fairy Tern 200 200 80 300- 175 750 300-400 Hawa.Noddy 75-100 25 100 150 50 200 100-200 W.T.T.B. 1 -- --- 2 -- --- 1 B.T.Curlew --- -- --- 1 --- --- 1 Gr.Frigate --- -- --- -- --- 1- 1 Com. Noddy --- -- --- 50 --- 25 ?25-50? Fairy Terns were probably nesting and both old nests and young of the Hawaiian Noddy. A few moments were spent observing Fairy Tern behaviour. When startled by a gun in the distance these birds responded by with flight intention movements (wing-raising) and quiet "wheels" which may indicate that this "wheel" is a low intensity alarm or anxiety note. To a shouted monosyllable they responded by elevating the head from the shoulders and looking around.