The decorative metal housing is sturdy and attractive, with an elegant look that will suit formal gardens. The top cap has a spring loaded button for easy release and refilling, and it keeps the lid securely in place. The built in catch tray allows a wider variety of birds to feed. We found that finches and sparrows were visiting this feeder more often than ones with perches. On a cold fall day, this feeder is a hive of activity with multiple species making return visits from dawn until dusk. Capacity: 500g (1 lb) of seeds.