13 Jan - Day spent on activity and light studies. Masked Booby Count completed. (See below) One Wilson's Snipe collected by Warren in afternoon - No booby sitting on egg in South Antennae Field. Two loose Haysan Albatross banded - Noted today; that with one outstanding exception all black-footed albatross have dark rumps. Warren tells me that blackfoots seen around Oahu have white rumps without exception. Two blackfoots seen with more or less intermediate rump coloration. (Dusky but lighter than normal blackfoot. Collected 6 Haysan eggs from deserted nests.