Red-billed quelea is sometimes called "Africa's feathered locust". The usual pest-control measures are spraying avicides or detonating fire-bombs in the enormous colonies during the night. Extensive control measures have been largely unsuccessful in limiting the quelea population. When food runs out, the species migrates to locations of recent rainfall and plentiful grass seed; hence it exploits its food source very efficiently. It is regarded as the most numerous undomesticated bird on earth, with the total post-breeding population sometimes peaking at an estimated 1½ billion individuals. It feeds in huge flocks of millions of individuals, with birds that run out of food at
Creature type (Dungeons & Dragons) immunities. A monstrous humanoid is similar to a humanoid (see above), but usually has monstrous or animalistic features. Examples include harpies and minotaurs. All monstrous humanoids have darkvision out to 60 feet; many have supernatural abilities as well. An ooze is an amorphous or mutable creature without a single solid form. Oozes are usually mindless and homogeneous, and reproduce by simply splitting into two. The most famous ooze is the gelatinous cube. Many oozes dwell underground, and most secrete an acid from their skin that dissolves flesh and other materials rapidly. Oozes are essentially blind, but an ability called "blindsight",