None of the boys could have stolen them, because the door had been locked; the doves could not have eaten them, and there were no rats about.

There was great lamentation among the young Bhaers till Dick said, "I saw Frisky on the roof of the corn-barn, may be he took them." "I know he did! I'll have a trap, and kill him dead," cried Rob, disgusted with Frisky's grasping nature.
"Perhaps if you watch, you can find out where he puts them, and I may be able to get them back for you," said Dan, who was much amused by the fight between the boys and squirrels.
So Rob watched and saw Mr.and Mrs.Frisky drop from the drooping elm boughs on to the roof of the corn-barn, dodge in at one of the little doors, much to the disturbance of the doves, and come out with a nut in each mouth.

So laden they could not get back the way they came, but ran down the low roof, along the wall, and leaping off at a corner they vanished a minute and re-appeared without their plunder.

Rob ran to the place, and in a hollow under the leaves he found a heap of the stolen property hidden away to be carried off to the holes by and by.
"Oh, you little villains! I'll cheat you now, and not leave one," said Rob.

So he cleared the corner and the corn-barn, and put the contested nuts in the garret, making sure that no broken window-pane could anywhere let in the unprincipled squirrels.