Yardenman, I understand you sadness, but don't give up. If something happened to the hummers that used to return to your yard, it will take awhile for new ones to find you. Maybe all the strange weather around the country took them to different places. I know I have one hummer this year after having none for 5 years. Good luck. You never know when one will appear.
Hope

Oh, I'm sure not going to give up, I enjoy their presence far too much! I will keep putting out fresh nectar every few days until it is time for them to leave. I really want to attract humers again. If something broke the line of hummers who stay here, I will try to attract new ones again and start fresh.

The cedar tree that they have nested it in the past is still here, the butterfly bushes and other flowers that atract them are still here, and the yard is organic (so should be healthy for them).

I think I should probably move the feeders to more obvious places though. My little lineage knew where to find them in the shady places where the nectar stayed freshest, but I need to attract new birds, sadly.