During the evolution of animals on Earth the struggle for existence made the animals to adopt to new methods and sharpen those new skills for their survival. If we believe the Darwin's theory of evolution, it seems likely that such thing can happen while the evolution.
I have seen a footage of a bird which throws a killed worm near the bank of the lake where water is too shallow and then waits for a fish to come to grab the worm and as soon as it comes there the bird catches the fish. Strange but true.
But the example given by the author is really very intelligent and strange behaviour depicted by any animal. I thank the author for posting this interesting information.
Knowledge is power.