This alternative jar lid in conjunction with an old pickle jar creates a birdfeeder. The pickle jar opening is ~70mm in diameter with a threaded exterior being ~10mm high. Rather than a completely threaded lid interior the lid interior consists of four 10mm ridges with a 5 degree slope with one mounted at each of the four main cardinal points. At the location were the rim of the jar meets the stop in the lid, a ridge is created which will accomodate an O-ring to produce a seal to reduce the ingress of rain water entering around the jar to lid rim interface. The roof of the lid is inclinded at an angle of 10 degrees, both to ensure feed does not sit at the back but gravitates to the front of the feeder and for any moisture to run to the front to exit via a drain. In conjunction with this a dome sits in the centre to manage the flow of feed. This particular bird feeder is designed to be mounted vertically with a number of different mounting options. 1: Flat vertical surface. 2: Vertical Right angle edge. 3: Vertically mounted pole. This is accomplished with a flat vertical mount (FVM), in conjunction with an attachable V block which enables multiple mounting options using screws and/or cable ties. The FVM attaches to the feeder lid on two slider rails, enabling the feeder to be easily removed for filling whilst leaving the mount in place. Additionaly, a 6mm hole in the feeder body which aligns with the main flat vertical mount enables a bolt with nut (alternatively Clevis Pin/Cotter Pin/Hair Pin/Dowel Pin arrangement), to be inserted to hold the two elements securely together. Complete build details can be found here: https://www.instructables.com/Pickle-Jar-Bird-Feeder/