Crocus tommasinianus is just starting to flower. Like Snowdrops and Winter Aconites it's a woodlander by nature that flowers early in the year when the trees are bare. Indeed C. tommasinianus is sometimes called the Woodland Crocus but the flowers only open when the sun is on them. It also does well in grass. The golden anthers are dusted with pollen which is manna for emerging pollinators.