Maclean 1969 C. bairdi 4. 21 June) have 4 eggs. Trapped one bird from each nest: pole 8 - ♀ incubating - weighed 42.5g - given one band; pole 12 - ♂ incubating - 36.5g - given band on each leg. No other bird by either nest. 22 June Went out to collect the above nests. Nest #12 - unbanded (♀) incubating; banded bird nearby. Collected both (SN 1060, 1061) adults and 4 eggs: 9.9, 9.8, 9.8, 9.7 grams. the other nest by pole 8 - the banded bird was incubating, with no other in sight. I collected this bird - the ♀ - SN 1059. It turns out to be a ♀ with a shelled egg in the oviduct! i.e. - a 5th egg. And just where did she plan to drop that egg??? I think I'd better do some banding in the Drum area, the four eggs of the clutch she was incubating weighed: 10.2, 9.9, 10.2, 10.2 grams. [Note: because of the band on the bird there was no chance of confused identity. Did not yet autopsy the bird to count ruptured follicles.] Saw 2 birds displaying high over Barrow village. 25 June Found a 2 egg nest - but probably