Other uses of wings other than flying are:
Swimming, diving (penguins)
Threatening by appearing bigger (owls)
Threatening by making noise (chickadee)
Directly in combat (swans)
The black heron even uses them to cast a shadow to hunt better click
Ok, there are so many things, I'm not gonna include more examples: They can be used for balance, to do various things during breeding and last but not least to impress the ladies