David Long

“Duck Decoy Buckinghamshire In London at low tide it is still possible to find traces of Saxon fish and eel traps in the Thames, and near Brill in Buckinghamshire the National Trust has preserved what might be described as their avian equivalent. Today the word decoy has a wider meaning, but its origins are Dutch and originally described a type of wicker enclosure introduced to Britain from the Netherlands in the seventeenth century.[7] After landing on a lake or pond, waterfowl were encouraged into these enclosures by dogs specially trained for the purpose. The ruse works because ducks can become victims of their own curiosity. Faced with a likely predator, a duck will often keep it under observation rather than fly away. Mistaking a hunter’s dog for a fox, birds could thus be tricked into remaining on the water and gently led along the course of the decoy. Thereafter, the chances of escape would be reduced by narrowing the width of the enclosure as the birds paddled farther into it, and by giving it a curved shape that cut off the view of the pond. Once trapped in this way, the birds could be easily caught and killed; the meat all the better for being free of lead shot. As a source of nutrition, the decoys proved relatively cheap and efficient and soon hundreds were being constructed around the country. By the late nineteenth century, however, the number had slumped to a few dozen and today there are just four which, if they are used at all, play a role in trapping animals for ringing rather than for the pot. Hidden away in woodland, the Boarstall duck decoy is beautifully preserved and fairly typical of the late seventeenth century, although iron hoops suggest it might have been of above-average quality. With three separate enclosures or ‘pipes’, it includes hurdles behind which the decoyman could hide, perhaps throwing grain onto the surface of the water to further tempt the birds to their doom. Originally serving the kitchens of a now-vanished medieval manor house – to which the National Trust’s Boarstall Tower is the old gatehouse – this simple but ingenious device remained in use until the 1940s.”
― David Long, Lost Britain: An A-Z of Forgotten Landmarks and Lost Traditions