A. M. Verbeek 1966 Calidris bairdii (6) #14 - 4 eggs, #11 - 4 eggs, #12 - empty, #19 - 3 eggs, #7 - 4 egg, #18 - 4 egg #20 - 4 eggs. Also #24 - 3 eggs at 17:30. 13 July #22 hatched, one young dead in nest, and one egg, which may have been the fourth egg in the clutch. This particular egg was almost completely hidden in the nest material. On opening it, the egg proved to be infertile. #18 - 4 young in nest at 22:00 #2 - nest empty at 19:45. 14 July #1 - 1 dry young, 1 wet, 2 eggs piped #4 - 2 dry young, 2 wet. 15 July New nests. #30 - 4 egg Elson Lagoon #31 - 4 egg Near CREL dam. #1 - 1 dry young in nest, + 1 piped egg. 16 July #28 - fledged. #7 - fledged. #8 - 3 wet young, 1 egg at 21:15. Incubation period for nest #1,8 is 20 days. 18 July #20 - 4 eggs; #13 - 4 eggs; #25 - 4 eggs, #17 - 4 eggs. Steve watched #13 for three hours and only saw the birds go off the nest twice for some 5 minutes at the time. He also saw two birds feeding nearby. I watched #25 for 3 hours and saw the incubating bird leave the nest once for 4 minutes. In addition I saw four other birds feed along the shallow pools, but none of them stuck around. At about 17:00 Steve collected the incubating bird of Nest 13 (weight 39.3 g Ovary 5x3) and also the bird of Nest #20 (weight 42.4 g Testes 1.3x1). Both birds had broadpatches and