The giant bill of the chestnut-mandibled toucan makes up a third of the bird's bodylength, but thanks to a honeycomb structure, it's not as heavy as it looks.
栗嘴巨嘴鸟很大的喙占据了它身体的三分之一长度，但由于其为蜂巢式结构，它并没有看起来那么重。
2
Size is more than just bodylength, but also wingspan and feather length.
体型不只包括体长，还包括翼展、羽长。
3
That's over 18 times their bodylength, about the same as you leaping a 10 story building.