Answer to Define base level and distinguish between ultimate base level and temporary (local) base level..
Niger is a oily seed which makes it an excellent energy source for the birds that eat it. But its oily nature also causes it to dry out AND LOSE ITS ATTRACTIVENESS TO BIRDS.Birds will turn their beaks to old niger seed.Avoid waste by only purchasing niger in a quantity you'll use in a month or two.ou may also see it called NygerÂ®. 3) NIGER SEED HAS A SHELL. As small as it is, a niger seed does have a shell. If you think birds aren't eating the seed because you see some on the ground, examine it more closely: you may be seeing mostly the thin niger hulls.
Aspergillus niger or A. niger is a fungus and one of the most common species of the genus Aspergillus.ome strains of A. niger have been reported to produce potent mycotoxins called ochratoxins; other sources disagree, claiming this report is based upon misidentification of the fungal species. Recent evidence suggests some true A. niger strains do produce ochratoxin A. It also produces the isoflavone orobol.