I disagree - a lot that I see in the example search lack the individual-feather dexterity that characterizes "wing hands". Some show the whole wing non-dexterously holding something, some use the leading edge of the wing, some have the item tucked under a folded wing, some are bat ponies with [wing claws](/tags/wing+claw)s)...
Some definitely should get the tag added manually, but I don't think it should be implied.