Geo duck skeletal1/10/2023 ![]() 3 Depending on species, adult shell diameter is between 4 and 10 inches. All are protected under CITES Appendix II. Though it more specifically refers to species Nautilus pompilius, the name chambered nautilus is also used for any of the Nautilidae. Because it was easy to break, Daddy put it in a plastic case, which was sort of a good idea but now it is difficult to look at or measure, so I'm glad I've got another. It comprises six living species in two genera, the type of which is the genus Nautilus. I found the duck bones besides a lake in the Pheasant Woods which we now call Duck Skull Lake. One of the first skulls I found was a mallard duck skull. It was difficult to get because all the floorboards were broken so I had to step carefully to get it. I found it in a broken shed near a loch where geese come over the winter. The bottom skull is a type of goose, I think a pink-footed goose ( see why here). It's the biggest type of bird skull like this with this type of beak, but even this one isn't fully grown. The top skull is from a mute swan, and I found it in the Secret Vault. Here is the skull next to some other similar skulls that I have: Because of the colour of the feathers, I knew it was a girl mallard. The Surprisingly Complex Science of Bird Longevity. Then I looked at this website and it said it was a mallard. Birds are a group of warm-blooded vertebrates constituting the class Aves, characterised by feathers, toothless beaked jaws, the laying of hard-shelled eggs, a high metabolic rate, a four-chambered heart, and a strong yet lightweight skeleton. To make sure what it was, I measured the skull, and it was 110mm long. Ducks and geese have a flat beak that isn't sharp at the end. Here's what it looked like when we found it:īecause we'd seen its body, we knew what type of bird it was. Normally when we find bones all the flesh has already gone, but this one we put in some water and just left it there for about two weeks, then daddy sprayed it with the hose and then it was just the bone. When we found it it was still rotting away. ![]() This is the mallard duck skull that I found back on a walk here.
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