Steel-Beak Vul-gollum/Rulings

Japanese FAQ Rulings (Source)

 * Q2173: While this card was in my Drop Zone during my turn, one of my  monsters was destroyed, and I didn't call this card. Later on in that same turn, another one of my  monsters was destroyed.  Can I call this card now?
 * A: No, you cannot. Iron Flocking was activated when the first  was destroyed.  Since it was already activated once, whether you called this card or not, Iron Flocking will not activate again during this turn.


 * Q2174: If this card on my field is destroyed, can I activate its own Iron Flocking?
 * A: No, you cannot. Iron Flocking only activates in the Drop Zone when a  monster you control is destroyed.