In reply to mack:
For folks interest: Birds that dive have their legs positioned far back, meaning good for swimming but rubbish for taking off. Divers (Loons) are so bad at taking off they need a king runway and can’t nest where treasvare close to the loch, they would crash into them. Mallards and the like don’t dive but tip upside down to fed. Their legs are central meaning they can lift straight off the water.
Post edited at 13:34