I suspect its because they are coming south from colder regions, but I may be completely wrong.
Je soupçonne que c'est parce qu'ils viennent au sud de régions plus froides, mais je peux me tromper complètement.
It is easy to be completely wrong, and even if now everything has changed, somehow - in some ways - I received more than what I gave.
Il est facile d'avoir tout faux, et même si aujourd'hui tout a changé, quelque part - d'une certaine façon - j'ai reçu plus que ce que j'ai donné.
to see her be completely wrong about her kids.
His first impression of his colleague eventually turned out to be completely wrong.
His guessing about the weather often turns out to be completely wrong.
They made an offhand assumption that turned out to be completely wrong.
The weather forecast published yesterday turned out to be completely wrong this afternoon.
He'd be completely wrong to assume that everyone shares his very strong political views.
Il aurait grand tort de supposer que tout le monde partage ses opinions politiques très tranchées.
His basic assumption about their intentions proved to be completely wrong.
She'd be completely wrong to think that money is enough to make someone truly happy.
Elle aurait grand tort de croire que l'argent suffit pour rendre quelqu'un vraiment heureux.
It would be completely wrong during this period of crisis to wonder when...
Of course, it is also quite possible to be completely wrong.
I thought this job would be easy, but I turned out to be completely wrong.