Find out: 1  the documents you need. 2  the common errors to watch for. 3  the consequences of filing an EITC return with an error. 4  how to get help preparing your return. 5  what you need to do if your EITC was denied in a previous year. 6  how to claim the credit for earlier tax years.
Biological pigment. The budgerigar gets its yellow color from a psittacofulvin pigment and its green color from a combination of the same yellow pigment and blue structural color. The blue and white bird in the background lacks the yellow pigment. The dark markings on both birds are due to the black pigment eumelanin.
The resulting pigment is called a lake pigment. The term biological pigment is used for all colored substances independent of their solubility. In 2006, around 7.4 million tons of inorganic, organic and special pigments were marketed worldwide.