Scientists use the following as an example of reasoning and subterfuge in an animal. A blue jay is in a tree while its fellow blue jays are scavenging some food on the ground below. As a corvid it is capable of mimicking many sounds, such as the screech of a hawk and it emits just such a screech which immediately scatters its fellow jays to the wind. Then the clever bird descends and enjoys the feast all to itself. Is there any explanation other than thinking?