"...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.
IF MY BIRDS ARE INDOORS, HOW DO THEY GET WORMS?
KRISTEN REEVES, MEADOWLARK FARMS AVIAN SUPPLY, INC.
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...