Look up the Wilson Snipe with the "Winnow" sound. Took a while last year to finally get Merlin to recognize it with them being farther off. Something I'm sure I used to hear lots of times and had no idea what it was, I know we have snipes but had no idea that they made that sound.
Identified that European Starling last year with sound and visual, again had no idea what that bird was even though I have seen it plenty of times around the farm. Grackle's can F---- off. I have bee able to trick it for a turkey with a couple different hand calls, yet I can't fool a turkey it seems.