Conflicts With Humans
Some species of weaver finches occur in large numbers in urban and agricultural areas, where for various reasons they may be regarded as pests. The house sparrow and the Eurasian tree sparrow are most important in this respect.
The world's most important avian pest is probably the quelea (Quelea quelea) of Africa, which eats large quantities of ripe grains in places where it is abundant. This bird roosts communally in huge numbers, where it is sometimes sprayed with an organophosphate pesticide. It has been estimated that as many as one billion of these weaver finches are killed in this way each year.
See also Finches.
Forshaw, Joseph. Encyclopedia of Birds. New York: Academic Press, 1998.
Perrins, C.M., ed. The Birds of the Western Palaearctic. Vol. VIII. Crows to Finches. Oxford, England: Oxford University Press, 1994.