Red-billed quelea including annual grasses of the genera "Echinochloa", "Panicum", "Setaria", "Sorghum", "Tetrapogon" and "Urochloa". One survey at Lake Chad showed that two thirds of the seeds eaten belonged to only three species: African wild rice ("Oryza barthii"), "Sorghum purpureosericeum" and jungle rice ("Echinochloa colona"). When the supply of these seeds runs out, seeds of cereals such as barley ("Hordeum disticum"), teff ("Eragrostis tef"), sorghum ("Sorghum bicolor"), manna ("Setaria italica"), millet ("Panicum miliaceum"), rice ("Oryza sativa"), wheat ("Triticum"), oats ("Avena aestiva"), as well as buckwheat ("Phagopyrum esculentum") and sunflower ("Helianthus annuus") are eaten on a large scale. Red-billed queleas have also been
Helitron (biology) Helitron (biology) Helitrons are one of the three groups of eukaryotic class 2 transposable elements (TEs) so far described. They are the eukaryotic rolling-circle transposable elements which are hypothesized to transpose by a rolling circle replication mechanism via a single-stranded DNA intermediate. They were first discovered in plants ("Arabidopsis thaliana" and "Oryza sativa") and in the nematode "Caenorhabditis elegans", and now they have been identified in a diverse range of species, from protists to mammals. Helitrons make up a substantial fraction of many genomes where non-autonomous elements frequently outnumber the putative autonomous partner. Helitrons seem to have a major role