(515) I make a new nest. I decided to "make" another nest first and substitute it for the existing one. I got one of those hemispherical sieves with a handle that they use in kitchens, borrowed an old, but clean, Brown Towhee's nest, put it in the sieve, enlarged it by spreading and packed it in firmly with strips of sacking. This produced a nest with a convenient handle, that could put any place. It really looked pretty good. Put young into it. I waited until B was off to get some food, then put the two youngsters in the new nest and tore out the old one ruthlessly, placing the new one temporarily in its place. If the parents should refuse to accept the substitution I was "up against it good and plenty". Parents accept the change. However, Greenie soon came with an enormous Jerusalem cricket and did not even hesitate to examine the strange structure, and, in a few moments B came with a centipede as wide as a lead-pencil. B inspects it for ants. After feeding this, he resumed his ant-inspection, but found none in the nest so, for the first time noted, began picking them off of a nearby branch. The next step seems, at the moment, to be placing the nest in the house and shutting that off absolutely from contact with any portion of the tree. However, I noted that the faeces of the nestlings have now become very fluid (as they do when they are ready to leave the nest) so as it does not seem time for this change, I am not sure that it is not a sign of illness and possible failure to recuperate. It may be also, that this increasing fluidity has attracted the ants and it is not clear where cause and effect should be located. Young ill? Which is cause and which effect? New nest great improvement. 10:15 A.M. The new nest is functioning perfectly. It is roomier and has a firm margin which enables the parents to select readily the most effective vantage point from which to administer food. They are taking full advantage of this feature, which also is of assistance to Brownie in ant-inspection. The survivors have suffered no loss of appetite. B's "bedside manner" is perfection. Nothing could B a fine parent at nest.