This image shows African armyworm moths (Spodoptera exempta) flying across Kenya, as seen on an entomological radar display (distance between the range-rings on radar display = 463 m). The dense aerial populations, produced by convergent wind-flows, can result in high concentrations of moths on the ground, mass egg-laying and, ultimately, serious outbreaks of the "armyworm" caterpillars. This has resulted in immense grazing pressure on wintering, breeding and intermediate stop-over locations that has led to both overgrazing of natural vegetation and conflicts with agriculture. This image relates to a paper that appeared in the 4 April, 2014, issue of Science, published by AAAS. The paper, by Silke Bauer at Swiss Ornithological Institute in Sempach, Switzerland, and colleagues was titled, "Migratory Animals Couple Biodiversity and Ecosystem Functioning Worldwide."