Examination of young bird. (503) At 10:45, both parent being absent, I took one of the chicks out of the nest. All have their eyes closed. There is very little food in their crops. They are a purplish brown all over. Their flight and tail feathers, and a row down the center line of their backs are out about a quarter of an inch or less. (6mm.) As yet they are but pin-feathers without vanes. On finishing the inspection Greenie came with a few small worms and finished feeding with meal-worms taken from the worm box. Before this they had been fed by the parents (with food found by them) a few times. B brought a large ground-spider on one of his returns. The parents are leaving the nest frequently and foraging. 11:35. B has just finished a half hour period at the nest, during which he fed the chicks twice with meal-worms, napped frequently and collected excrement. The latter operation is more or less sys- tematic, the adult bird rising from the nest, sitting on its edge and scrutinizing each youngster carefully as if there were a definite time at which the young defecate. When Greenie arrived, although B had just fed the young and had stopped before the worm supply was exhausted, she gave them the few small insects which she had in her beak, and then used up the meal- worm supply rapidly, although there were more than enough. I had cut these worms in two to see if that would make feeding easier and it seemed to have the desired effect. I cut worms in two as experiment. Works well. B more skilful feeder. Brownie is more successful at the feeding operation than his mate, making a much easier job of it. This appears to be because he thrusts his bill farther down into the bird's gullet and holds it there longer. I wonder if this means that he has had more experience and is, there- fore older. Wildness of Vigors wren. During part of the foregoing period a Vigors wren was up on the platform with me, eating soft-food out of the dish by one of my feet. These little birds are very bold and soon find food wherever it is