Muscari Dark Eyes Question

This is probably just a general question for all muscari...but, I have had these in the ground for four years and this year, the blooms are very very tiny. Do these need to be divided after so many years? If so, tell me what I need to do.

Thanks, Debbie

I'm afraid I don't know the answer to your question, but I was wondering if you just hadn't waited long enough. Did the blooms get any larger as the days went on? Do you think you had fewer blooms, or just smaller ones?

The blooms got larger...but it appears they are definitely overcrowded. I guess I will try dividing these after blooming is finished.