How do you tell Pumpkaboo sizes apart in the wild?

Question

Having faced Small, Average, and Large sizes, I'm having difficulties telling them apart. Is there any identifying mark/position/anything to tell what size it is, or do you just have to guess?

Comments

There are different sizes??

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Yep. Their base stats differ too; the bigger they are, the more Attack you get and the lower your Speed gets.

Answer 1

For X and Y on Route 16, on the grass background when the health bars first appear or performing a move:
Small Pumpkaboo's top will stay below the Farthest Tree
Average Pumpkaboo's top will be just above the bottom of the Farthest Tree
Large Pumpkaboo's top will be in the middle of the Farthest Tree (touching the 2nd Farthest Tree)
Super Pumpkaboo's top will be at the top and occasionally go above the Farthest Tree

Answer 2

Turns out the easiest identifier is it's cry. The super size is dramatically different. Much lower pitched than the others. Check the appearance tab in Pumpkaboo's Pokedex entry in-game to hear it. (it'll show up as long as you've ever seen a Pumpkaboo)

Happy hunting~

Comments

So each size has the species call in a different pitch range?

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I can't hear much of a difference between Small, Average, and Large, but Super is VERY distinct. Just open up your Pokedex and listen to hear what I mean.

Edit: It finally occurs to me that you don't only care about the Super size. I honestly can't tell the difference between the others, I'm not even sure if I've seen them in the wild yet. The only one I know for a fact can be determined is Super size due to how different its cry is.