But there is an easy way of identifying it; the honey bee is ALWAYS looking for flowers and pollen but the narcissus fly never does. Hi all Many thanks for the input. I have quickly learnt to recognise the hum especially when a male jumps a female. I know I don't kill many per year but a permanent fly swat in the garden is handy. They do go to flowers for pollen and or nectar especially daisy types. The favourites in my garden are Argyranthemums and hardy Geraniums. If you don't know what this fly looks like email me and I'll reply with a photo. Mark