The honey bee and the sparrowhawk

Yesterday was the first day of spring.  It was sunny and calm with the temperature up to a heady 8℃ and the bees were buzzing after all the recent cold weather.  While I was watching the sparrowhawk a bee stopped for a rest on his perch.  The bee was completely unimpressed by the bird but the hawk was very aware of the bee and flinched violently when it took off.  I expect the hawk has never seen a bee close up before but knows instinctively that they are not to be messed with.