Great question Ron,
 
So here’s the deal, birdseed is a natural product harvested from the ground outside. All bird seed contains bug eggs. They could be weevils, grain moths, and so forth. These eggs are present in all birdseed. If the bird food is not stored in a cool environment or it is not used in a timely fashion the eggs become larva and the larva become in your case, moths. 
 
If you keep your seed in a dry storage area it’s best to keep the food in a clear Tupperware type container so you can see any activity before you open the container daily. Also, it’s best to not buy more food than you can use in two to three months because that’s when insect infestation can become a problem. In the meantime, if it sounds like you are a candidate for our moth traps which are very effective you can find them here.

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