OK, here's how I see this.
It's not an Eagle to me.
Also, the Toucan idea (and I know it wasn't a firm suggestion for this bird, but more an indication of a similar beak type) isn't as far out there as it might appear. The 'anatomical features' of the bird in the hilt are far closer to a Toucan than an Eagle.
But how about this
What I SEE here is a bird which has a long neck and a large curved beak similar to but smaller than that of a Toucan or Hornbill.
Eagle headed hilts aren't usually shown with the eagles 'neck' being full hilt/grip length.
Now I know there are exceptions of course (as below). But in my limited experience they tend to still be somehow in proportion and recognisable as an Eagle.