JPhillips 1975 Calidris melanotos Grid Z 13 July during census picked up 1r melanotos ♀ plus chicks - i.e. I observed them. she had moved from Grid Z-PS1 (mean 4,2 stake) to beyond the (1,10) stake. See Grid Z data sheet in following data note (book for hoy Transact 3 18 July running transect 3, 12:20 picked up 'flock' of 67 melanotos near end of transect - 12 birds actually on that area of transect. Definite signs of space specific aggression along the edge of Westdown lake in unit 17, 18 & 19 both on the edge and in adjacent to the ocean. In 6 minutes before I approached flock (it was responded by jaeger) I saw 4 supplantations by 3 birds. Distances defended of ~ 10-20 m. Contiguous territories. Supplantations of (low intensity alarm call) - form of behavior was side-head supplant and aggressive chirps. Grid Z 21 July (9,9) region - ♀♀ melanotos, both w/ broods, interacting aggressively. one flew at me greatly alarmed, churning, then giving the protective brood call. Other ♀ also w/ chicks flew at her, presented side-head supplant. Did this several times in the period during which I was nearby. 1245 - [illegible] (w/chicks ~ 125 m above (1,10) stake (see grid map in following data book) - came to investigate me as I approached her chicks. She alternated alarm calls with feeding - in the Hobby/Miller oil spill pond. Fed along outside rim of pond in emergent grasses. Bill became blackish w/oil. Grid 3 23 July more ♀-♀ aggressive interactions Grid Z 24 July ♀ [illegible] (at [illegible]) began responding to my presence on grid during census near the (5,9) region at ~ 9:15. I am sure that her chicks were in general area at that time. However she would fly at me as far away as (8,8) region. However at 11:30 I saw her + a chick [illegible] (one found, at least 2 others present) just outside the grid at 9,4