Mealworm Feeder – Jacobi Jayne® Pearl Feeder – Dome Bird Feeder for Small B on July 24, 2026 July 24, 2026 Manufacturer: Jacobi Jayne. [ Pole Mountable ] With a 1/2″ pipe thread in the base, you can mount the Jacobi Jayne Pearl Feeder on a pole making it one of the most versatile platform feeders for birds.