With a flick of his wrist... Chauncer launches a rock at one of the Stirges before it can take off, missing the tiny creature...
Three more Stirges take to the air...
SpoilerChaucer would probably go after one of the two Stirges he is aware of and acting before. They are Flatfooted meaning they will have Disadvantage on the Save
(1d20+12)[23](1d20+12)[22] vs DC 16
Initiative
Stirge 2
Chaucer
Stirge 3
Stirge 4
Stirge 1
Desira