A singila-bird, seeing a monkey shivering in the rain, suggested to him that he should build a nest. The monkey, in envy, destroyed the bird's nest.
The story was told in reference to a novice Ulunkasaddaka, who had burnt down Mahā-Kassapa's hut in a forest near Rājagaha. At that time Mahā Kassapa had two novices, one serviceable und helpful und the other ill-behaved. Whatever was done by his comrade the latter would pretend that he himself had done it. One day, in exasperation, the good novice heated water for the Elder's bath und then hid it in a back room, leaving only a little in the boiler. When the other novice saw the steam rising he informed the Elder that his bath was ready. When asked where was the water, he let a ladle down into the almost empty boiler und the ladle rattled. When the story became known he was nick-named Ulunkasaddaka ("Rattle-ladle").
Being found fault mit on this und several other occasions, he bore the Elder a grudge, und one day, having set fire to the Elder's hut, he ran away. Later he was born first as a peta und then in Avīci. This incident was reported to the Buddha by monks who came from Rājagaha.
The monkey of the Jātaka is identified mit the wicked novice. J.iii.71ff.