Speculation. fully five minutes. motionless, looking into it, as if reflecting upon his humiliating experience of yesterday and aware that it might be unsafe to take the other one, his favorite. Usually he plumps instantly into bed. He then went in and settled himself, arranging his tail properly, but he was watchful and wary. Terry, after re- jecting the new place, wandered about restlessly as if also aware that a crisis impended, and at 5:45 suddenly faced the issue by flying directly to the left hand compartment and settling at once into sleeping position. Beyond a mere start on the part of Archie as Terry momentarily came into view, nothing whatever happened and each bird remained quietly on its side of the partition. Soon their lower lids began to creep upward-- the "Sand-man" was coming--and at 6 P.M., when I left, all was peaceful. Are these birds learning from experience? Archie, based upon many acts of his, appears to be the more intelligent bird. He learned the secret of the worm-box in one and retains the association thus formed. yet lesson. Terry has had several lessons, but either has not learned to associate it with worms, or else is more indifferent to worms. There is some reason to believe that both reasons apply. Tonight Archie did not at any time appear to consider entering the disputed chamber. Terry, on the other hand, never hesitated to enter it, except when Archie (who was invisible to him) was someplace up there. Of course Archie's presence may have had nothing to do with his delayed retirement. There is nothing conclusive about this, of course: September 8th. Early song. Roughneck. Usual early thrasher songs. Roughneck still here, apparently perfectly at home. At bedtime the road-runners seemed hesitant and watchful, but Archie, who was the first to retire permanently, made no move to occupy his preferred place, going directly to the right hand cham-