I saw my first of the season today.  This morning it was on my white gaura in my front yard and this evening at my feeder in the backyard. It also visited my sweatpeas shortly. I think it is the same one from this morning but may be two different ones.  My neighbor to the back of me has a cassia tree that they hang out in even when the cassia is not in bloom.  My neighbor said he has seen their nests in that tree.  I am happy to know they are nesting that close to my home.