Macroglossum stellatarum (the Hummingbird Hawk moth) is unusual in that he can hover well and flies during the day. He migrates from his stronghold in the south every summer, when he can be seen all over Europe (there are similar moths in America). The larvae seem to prefer ‘bedstraws’ and the adults will drink nectar from a wide variety of flowers.
The adult Hummingbird Hawk moth sets up a routine for normal daily feeding and seems to fly ‘circuits’ by the clock, so if one is seen on such-and-such a flower at 11.00 one morning he will be there again tomorrow and the next day etc.. This makes him very easy to watch once you have first noticed him.
I saw my first Hummingbird Hawk moth several years ago one summer in the Auvergne (France). The sun was very bright and I noticed iridescent dartings around a huge lavender bush. Definitely hummingbirds I thought, and a quick jog through the memory banks revealed that they shouldn't be there in France. A new discovery! Creeping a bit closer he seemed to get smaller, and trying to go even nearer he simply vanished. “Quel domage” I thought “I will never see him again, and no-one will ever believe my new sighting!" (I soon realised they are all over France.)
Hummingbird Hawk moths regularly visit my lavender bush (planted specially for them) just outside my window in Villenueve de Duras (SW France). Their regular daily routine makes them easy to see, but I have found them impossible to photograph (others have had more success!).
None of the Nature Guides do the Hummingbird Hawkmoth justice, they are much more beautiful than they look on paper. It is worth relaxing in the sun (sipping wine?) near a lavender bush, and keeping your eyes open for small (2 cm max) 'furry' little bird-shaped bodies darting and hovering around the flowers in bright sunshine. As they hover in front of the flowers they drink nectar. If you can get close enough, you will be able to make out the long tongue probing the flowers and a blur of wings encasing a subdued iridescence.
The caterpillars eat leaves and are particularly fond of Lady’s Bedstraw (Galium verum). This plant could be grown near lavender in places visited by hawkmoths, in the hope that the adults can be tempted to lay their eggs there. If this were successful it would be possible to watch the caterpillars develop while observing the adults at the same time.
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