Great Trailed Grackles are fun birds to find and watch.
You find them easily by following their loud and distinctive vocalizations.
They chatter, sing, whistle and shriek. (I included a link at the end of this post if you are interested in listening to the diversity of their songs and calls.)
But mostly they sing like this happy guy.
Grackles are always at least as interested in you as you are in them!
They are devoted people watchers.
Cheers to you from the cheerful grackles~
Here is a sampling of their vocalizations:
https://www.allaboutbirds.org/guide/Great-tailed_Grackle/sounds
Ed;s Site. 
The birdies and I are grateful for your thoughtfulness. Thank you & cheers to you დ
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