I believe the first egg to have been laid at 11:40 A.M. Mar. 8th. I know that it was laid before 2:40 P.M. of the same day and that incubation commenced at once. I have visited the nest perhaps an average of 8 times a day since that time, or say, 120 times and, with the exception of the one minute period on the 16th., and the less than 2 minute period on the 19th. (both estimated and both caused by acts of mine) I have not seen a time when there was not either a bird on the nest or one ready to step in. I have not looked into the nest after dark as I do not care to risk disturbing the birds under those conditions. Certainly incubation has proceeded faithfully. 2:40 P.M. Still three eggs. They are now on the 18th. day of continuous incubation. I wonder if the eggs are fertile. If they are this surpasses anything I have read or heard mentioned as to the time required by thrasher eggs to hatch. At 5 P.M. Green-eyes was on the nest. Apparently he has no firm conviction that anything is wrong. It was no longer raining. I went down into the glade and Brown-eyes came for soft food, pausing occasionally to peck the drops of water off of the ends of the sage brush twigs. As I went up the ladder to the nest she followed in the expectation that I would drop worms down to her, as I often do to encourage her to take over operations. However I had no worms and after looking up at me repeatedly, she finally came up to the neest, Green-eyes opening up his bill as usual and "bubbling". There were still no young birds in the nest. B.E. examined the eggs very carefully and turned them over with her bill. The curved bill is an excellent implement for this purpose, as