Following a bumper year for American songbirds in the UK (multiple white-throated sparrows, cowbird, house finch etc) there has been a fair bit of chatter about the origins of these unusual spring arrivals.
Did they arrive by ship, or did they possibly arrive by ship? I think that they probably arrived by ship. Apart from the house finch, which likely just flew out of its badly secured cage.
Anyhoo, just to add satirical fuel to the firey debate, here's an amusing take on the whole thing (I found this link on the Lancaster & District Bird Watching Society website, so kudos to the post there...)
Be warned: some of the language can be a bit 'fresh' on this particular site...