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
Plant genome assembly products were used to clone remaining gaps, and YACs allowed the characterization of telomere sequences. The resulting sequenced regions were 115.4 Mb of the 125 Mb predicted size of the genome and a total of 25,498 of protein-coding genes. To sequence and assemble the genome of Oryza Sativa (japonica), the same strategy was used. For Oryza Sativa a total of 3,401 mapped clones in a minimum tiling path were selected from the physical map and assembled. One of the most important crops in the world, maize (Zea mays), is the last plant genome project primarily based on Sanger BAC-by-BAC strategy.