Natural mammal/bird communication

VERY interesting! And in more ways than one.http://www.npr.org/2015/09/03/434400838 … -the-enemy

http://www.npr.org/2015/09/03/434400838/warning-calls-decoded-squirrels-take-up-bird-alarms-to-foil-the-enemy

Love it and I am not surprised by this.