Quack is a collection of three nesting platforms for ducks in ports, aiming to minimise human-wildlife conflicts and preserve local biodiversity. The project began with observing duck behaviour in ports, consulting an ornithologist, and interviewing harbour masters about the "duck-boat owner" conflict resulting from water birds nesting on boats. These insights guided the design of prototypes tested during mating and nesting season, revealing that ducks preferred sheltered platforms close to the water level. The final collection includes a cork half-nest with an open deck, a concave plastic foam nest with a circular deck, and a wooden platform with a central cut-out for floating nests. Each platform offers various benefits and enables deeper research into ducks' preferences and behaviours.