For several of my SuperGourds I attached PVC pipe sections to the fronts of the holes to create an extension of the entrances. These were originally PVC couplers that are used to connect two sections of two inch diameter PVC pipe. I use both straight and angled (45 degree) PVC couplers on natural gourds to create longer extensions to my funnel gourds. I have posted many pictures of these modified natural gourds on the Forum. Martins thrive in these gourds. My first extenders on the SuperGourds were pointing downward or angled to the side, but that may have created too much lean forward for the hanging method on the Deluxe gourd rack. So I cut off the ends to create about a two inch long extension of PVC pipe. I also drilled small holes (Swiss cheese look) in the bottom of the PVC extender to give the martins something to easily grip rather than use any kind of perch or porch. It has worked fine. I attached the PVC extenders with Lexel adhesive.
These PVC extenders provide more protection to the martins inside the SuperGourds from avian predators like owls, hawks and crows. Also, the extenders minimize rain inflow through the entrance.
Next season, I am planning to attach full length PVC couplers to more of my SuperGourds to give the martins greater protection inside from avian predators and rain inflow. I hope to use some downward pointing PVC couplers, too. I will also hang the SuperGourds so that they swing side to side rather front to back to keep the gourds from leaning forward because of the extra weight at the entrance hole.
The martins have accepted these modified SuperGourds and the photo shows a female martin peering out of one and her mate sitting nearby on a cane perch pole. Also, please note the plastic caps inserted on the ends of the hanging rods that are popped into the Deluxe rack hub. These caps have so far stopped strong winds from lifting the hanging rods out, but we have not had any severe storms yet. On March 31, 2005, a severe storm with strong winds popped out about a third of my hanging rods on all my Deluxe gourd rack systems. The rods looked mangled and many of the gourds were upside down and some rods even fell off. I am testing the effectiveness of these caps for the company that originally made the Deluxe gourd rack system.
Just a short update?
Martins continue to arrive at our colonies and SY males are desperately seeking nest sites. I now have over 130 pairs of martins and will present another report soon. Hope everyone is having a great season.
Steve


