Cannot select BONE annotation

General
1

I did try to search for this since it may have been asked before, but could not find it.

When I set an unknown observation to “animal,” I am unable to select “bone” as an annotation. I am thinking “bone” is an annotation that might help someone with knowledge locate the observation for an ID (I notice that often if I set something to a “track” it will get an ID). Here is the observation:

https://www.inaturalist.org/observations/253934692

Just wondering if there is a reason why an animal cannot have a “bone” annotation (I can do that with Aves or Mammals) - in this case, base don the iNat suggestions, I’m not clear on whether it is bird (which is what I thought) or a mammal (which is what iNat is suggesting) so I just want ID as animal in hopes an expert can ID it.

2

If it helps, it is indeed an Avian skull

3

Probably because animal kingdom also includes many boneless animals such as insects. If you see bones it is safe to assume that you see a vertebrate.

4

Both are within Vertebrata (vertebrates), so IDing to that level will allow you to add “bone” for “evidence of presence”.

5

Thank you!

6

Thank you for the explanation.

7

Thank you. I thought it was an avian skull, but was confused by iNat suggesting mammals.