Red-billed quelea trees during the moonless period each night. The feathers were plucked and the carcasses fried the following morning, dried in the sun, and transported to the city to be sold on the market. The Sara people use standing fishing nets with a very fine mesh, while Masa and Musgum fishermen cast nets over groups of birds. The impact of hunting on the quelea population (about 200 million individuals in the Lake Chad Basin) is deemed insignificant. Woven traps made from star grass ("Cynodon nlemfuensis") are used to catch hundreds of these birds daily in the Kondoa District, Tanzania. Guano is
Red-billed quelea during daylight hours. The governments of Botswana, Ethiopia, Kenya, South Africa, Sudan, Tanzania, and Zimbabwe have regularly made attempts to lessen quelea populations. The most common method to kill members of problematic flocks was by spraying the organophosphate avicide fenthion from the air on breeding colonies and roosts. In Botswana and Zimbabwe, spraying was also executed from ground vehicles and manually. Kenya and South Africa regularly used fire-bombs. Attempts during the 1950s and '60s to eradicate populations, at least regionally, failed. Consequently, management is at present directed at removing those congregations that are likely to attack vulnerable fields. Red-billed quelea