Julie Dodd, ‘Paper Eggs’, Recycled magazines. The arrival of migrating birds to Europe from Africa is declining rapidly and at this rate, many species will be wiped out from the UK if we don’t do something about it fast. Numbers are decreasing each year because of a possible accumulation of several issues, but loss of habitat and climate change are most certainly the main factors. The loss of trees means loss of habitat, nesting, and food.