[jacquesm]

4 Kg is only about 5% of the weight of an average adult male. Now imagine that weight tied to different places on your body. On your back it might not be a big issue, but glued to the tip of one finger or maybe tied to one of your toes it could effectively disable or immobilize you.

The weight isn't the whole story, it's how it is placed that matters as well.

[nickpeterson]

It’s a matter of weight ratios, how can a 5oz bird carry a 1lb coconut?

[bregma]

It grasps it by the husk.

[kijin]

Distance of 70 feet or 7,000 miles?