“Yellow colour is an indication of maturity but not dying locust. However, at the later age the yellow colouring becomes very bright and the locusts will start copulating and laying eggs and at this stage we can say that they are dying. And unless one is following a swarm from the immature stage up to maturity no one can tell when the first egg laying has occurred, ” corrected Dr. George Ong’amo, an entomologist from UoN.