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Locusts are certain species of short-horned grasshoppers in the family Acrididae that have a swarming phase. These insects are usually solitary, but under certain circumstances they become more abundant and change their behaviour and habits, becoming gregarious. No taxonomic distinction is made between locust and grasshopper species; the basis for the definition is whether a species forms swarms under intermittently suitable conditions.

In the solitary phase, these grasshoppers are innocuous, their numbers are low, and they do not pose a major economic threat to agriculture. However, under suitable conditions of drought followed by rapid vegetation growth, serotonin in their brains triggers a dramatic set of changes: they start to breed abundantly, becoming gregarious and nomadic (loosely described as migratory) when their populations become dense enough. They form bands of wingless nymphs which later become swarms of winged adults. Both the bands and the swarms move around and...

Hi and welcome to the Homepage of John Hughes Photographic Art, thank you for finding my site and exploring my Photographic Artwork. I am originally from Carrickfergus in Northern Ireland but have now retired and live in Spain. I have nearly fifty years experience of photography and I have widespread photographic interests including wildlife, landscape, portraiture and street photography and my portfolio also features many images that have been obtained through my travels around the world. Hopefully you can find something in my collection of images that appeals to you and that would look good framed and hanging on your wall. I have a wide selection of Galleries on my page where images are grouped according to their theme. All images...