Fig. 1From: Untrained birds’ ability to recognise predators with changed body size and colouration in a field experimentDummies presented in the experiments. a Unmodified sparrowhawk (‘large hawk’ LH), b downsized sparrowhawk with unmodified colouration (‘small hawk’ SH), c life-sized sparrowhawk with pigeon colouration (‘large pigeon-hawk’ LPH), d downsized sparrowhawk with pigeon colouration (‘small pigeon-hawk’ SPH), e unmodified domestic pigeon (‘pigeon’ P), f life-sized sparrowhawk with robin colouration (‘large robin-hawk’ LRH) and g life-sized sparrowhawk with great tit colouration (‘large tit-hawk’ LTH)Back to article page