In "Swans deliver a climate change warning", we see a classic example of burying the lede. You have to read through four paragraphs and most of a fifth in this slanted opinion piece to finally see the following, "Experts said that the slow arrival was due to warmer than usual conditions on the continent, in particular the birds' other main wintering grounds in the Netherlands, and an absence of the north-east winds that aid their migration from the Arctic tundra of northern Russia."

Apparently remaining in the Netherlands over the winter isn't unusual for the swans. As for myself, I'd much prefer Florida.