Troyer's Vented Gourd Replacement Caps, Pack of 4 supergourd cap or just a few for

or just a few for use with a different bird house or feeder

Because purple martins are social birds

place the perch base assembly over the existing pole top cap

transforming it into a 2

5” wide for a sizable home

Troyer's Vented Gourd Replacement Caps, Pack of 4 supergourd cap or just a few forHelp regulate the temperature in your existing Troyer's SuperGourds with these Troyer's Vented Gourd Replacement Caps. Using these 4 durable, threaded plastic caps on your existing purple martin SuperGourds (not included) throughout the summer is a unique new way to keep the nestlings cool. A PVC elbow in the center of each plastic cap angles downward, directing hot air out of the cavity. Heavy duty polyethylene with ultraviolet inhibitors ensure