As you all know, Pokemon FireRed & Leaf Green has 3 legendary birds such as Articuno, Zapdos, Moltres located on Seafoam Island, Power Plant, Mount Ember.
I opened this thread to discuss general things about these birds. My main discussion is the capture of Articuno. I have noticed everytime I face Articuno, i catch it with 1 Ultra Ball, whereas Zapdos and Moltres many Ultra Balls. For my case, I have noticed it is not a coincidence. At least 3 times where I came across catching an Articuno, I make its HP very low (on red) and i paralyze it, and only use 1 ball to capture it. Tell me your opinions about this case and your experiences capturing the Legendary Birds.