It is statistics such as these that are leading to louder and louder calls for a radical rethink of the underlying philosophy of biofuel use, and for a slowing or outright moratorium on biofuel production -- at least until ways can be found of ensuring that that production does not end up increasing the environmental damage it is seeking to obviate.
Although that does not sound like a lot, it was enough to concern environmental groups because it is thought that there are just 500 of these animals left in the wild and mothers with calves get hit more frequently.