Either way, you really do have to admire how spiders are always raising their game. After all, it's more or less a rule that any list of creepy, dangerous or messed-up creatures is going to have at least one spider on it, since that is the animal Satan created when God was napping.
The Darwin's bark spider spins both the largest and the strongest web of any spider known. Experts think it's entirely possible this spider's web can catch birds. They just haven't seen it happen yet.
"I could sure as hell go for some chicken right now, I'll tell you that much."
Their webs can get to be about the length of two buses and can easily bridge rivers without even giving a shit. In order to support the weight of all that web and the struggling, dying life-forms caught in it, the webbing has to be incredibly strong. In fact, it's one of the strongest materials known to man -- 10 times stronger than Kevlar.
M. Kuntner, forskning.no
Which might make it more suited to downing small aircraft than birds.