<P> Some cephalopods are known to use coconut shells for protection or camouflage . </P> <P> Ants of the species Conomyrma bicolor pick up stones and other small objects with their mandibles and drop them down the vertical entrances of rival colonies, allowing workers to forage for food without competition . </P> <P> It is clear that animals of quite a range of species are capable of solving problems that appear to require abstract reasoning; Wolfgang Köhler's (1917) work with chimpanzees is a famous early example . He observed that chimpanzees did not use trial and error to solve problems such as retrieving bananas hung out of reach . Instead, they behaved in a manner that was "unwaveringly purposeful," spontaneously placing boxes so that they could climb to reach the fruit . Modern research has identified similar behavior in animals usually thought of as much less intelligent, if appropriate pre-training is given . Causal reasoning has also been observed in rooks and New Caledonian crows . </P> <P> It has been shown that Barbados bullfinches (Loxigilla barbadensis) from urbanized areas are better at innovative problem - solving tasks than bullfinches from rural environments, but that they did not differ in colour discrimination learning . </P>

Which of the following animals can detect stimulus of any sort outside the range of human capacity