"...The adult granary weevil is a somewhat cylindrical beetle about two-tenths of an inch (two to three mm) long. The head is prolonged with a distinct snout extending downward from the head for a distance of about one-fourth the length of the body. The weevil is polished red brown to black with ridged wing-covers and a well-marked thorax with oval pits. Unlike the rice and maize weevils, the granery weevil cannot fly. The egg hatches in a few days into a soft, white, legless, fleshy grub which feeds on the interior of the grain kernel. The grub changes to a naked white pupa and later emerges as an adult beetle..".    PennState College of Agricultural Studies

How did Weevils Get Into a Sealed Container?

The only answer I could come up with was that they were in there when I put the seed into the container, so I took down the container and pulled out some of the seed. Every single seed had a tiny hole in it that was barely visible even up close. I knew there were no weevils in the container itself, so they had to have come from the seed - and those holes in the seed must be from the Weevils burrowing out. So I spent the next several days grinding up 10's of pounds of seed, adding saline and viewing the dust I'd created under the scope. Sure enough, I saw signs of ground up Weevils, but I also saw other things I didn't "understand". Particles that shouldn't be there. So what were they? A bit of research gave me the answer I was looking for...Weevil eggs.



So my next step was to look for the grubs. And find them, I did.

One of the very valid questions I'm asked regularly is how, if the birds are housed indoors, do they get worms? Because I spend many long hours at the microscope daily, and because I tell my scope students to view every single item they feed their birds before beginning to attempt to identify pathogens, I must follow my own advice and view food items regularly. That means every time I offer my birds a new food, I also pulverize that food and view it under the scope. When I found worm eggs in my birds' droppings, I needed to know how, exactly, my indoor flock with no newly added birds got those worms. Then I saw weevils in one of my sealed seed containers and had an idea, which lead to a hypothesis. It was time to prove it - and I did. I'll answer this question and explain how I discovered the answer below...