There are two very good spots that you can try out:
• In Mafia Town, there's an area with a bunch of mafia members and about 5 crows. Gather them together and attack them one at a time without landing.
• In Alpine Skylines, on the way to the Lava Cake, you'll come across a section where you need to perform homing attacks on spiders to proceed. It is possible to skip the little resting area in the middle and go for the spiders on the right.