​On May 10th, (a bit late this year), I put out our hummingbird feeder and within hours, there was a pair here feeding eagerly.

However, 7-10 days ago, they vanished. 

I always boil the sugar water and I clean the feeder well at each refill.  Am disappointed and mystified as to what has become of them - both of them.  And why has some other couple not come along?

Any suggestions?  Thanks.

Connie Snyder