This power is highly concentrated in herbs and spices; just half a teaspoon of ground cinnamon has as many antioxidants as half a cup of blueberries, and half a teaspoon of dried oregano has the antioxidant power of three cups of raw spinach.[1]
Some Rough Estimates of Species Numbers. The estimated number of animals on our planet falls somewhere in the vast range of 3-30 million species (Erwin 1983, Wolosz 1988).
Confidence votes 438. There are approximately 10,000 bird species in the world. This number varies by a few hundred birds, depending on which classification system you use. Clements (now run by Cornell University) lists about 9,800 bird species whereas Sibley and IOU list over 10,000 species.