Those look like Lycoris bulbs to me. Those I recently dug and moved looked even more like yours than the photo below, but you get the idea. Are they big? ....say larger bulbs about tennis ball sized? That's about how big my lycoris bulbs were. They look like really big daffodil bulbs to me. In spring surprise lilies have foliage that looks like wide daffodil leaves. The foliage dies off when bulb foliage is dying off and blooms emerge in July or August.
Otherwise I'd say they're daffodils.
