Sunflower seeds

Everything about Sunflower seeds :

Botanically speaking, a sunflower seed is more properly referred to as an achene. When dehulled, the edible remainder is called the sunflower kernel.

For commercial purposes, sunflower seeds are usually classified by the pattern on their husks. If the husk is solid black, the seeds are called black oil sunflower seeds. The crops may be referred to as oilseed sunflower crops. These seeds are usually pressed into sunflower oil. Additionally, these seeds are usually considered the seed of choice for  bird feeders