Connecticut not a Nashville Warbler 5/23

We are not sure if we ever had a Connecticut Warbler in our backyard.  We are not counters of birds but we usually remember.  The Connecticut Warbler's migration is barely in Southern Minnesota, but here they are! Actually they look similar to a Nashville. (bottom of post)

The Nashville has a yellow throat while the Connecticut has gray extending through the shoulders. Nashville has a white eye ring.