Heuveling, C.D. 1968 February 15 Journal Evolving Island 59 While landing and working Great Frigates we have come across a number of young male sexually mature birds. These birds which could probably be considered as subadults still show some of the immature plumage on the throat and breast. The gular pouch is developed but not to the full extent of the adult males. This pouch is also a pale red, not like that of the adult bird. At least 15 of these young males were observed on nests with eggs. Normal pattern for adults on southern islands. Galar pouch white black Great Frigate (subadult male) After dark we went out in the full moonlight and attempted to work the Blue-footed Boobies. We got 5 birds out of the first club and 3 out of the second. It was fruitless from the start. After 2 hours of thrashing around we had managed to capture and band less than 20 birds. We finally ended up with a total of 68 returns for the evening.