Hm… so, at least in South Africa, carrier pigeons are faster than broadband data connections. And 4GB in two hours is a very respectable bandwidth, too. I wonder if this was RFC 1149-compatible? 
(More on it here. I’m not surprised that someone else made the same connection, though I am surprised that no one at The Register seems to have.)
I wonder what IP would travel like on a swallow, they go pretty fast unladen, but with a coconut tied to their leg with a large amount of data… and in this case assumedly it would be an african swallow!