I think these either need the beak to be a bit irregularly shaped or needs a black line inside the beak to make it more clear this isn't just a big hole in the face but an actual bird beak.

But other than that its great! And that's of course just my personal opinion, you do you!

I need the colored one as a sticker to cover that weird square thingy on my super keys.

Obigatory

Why is the white one happiest? Shit, am I a racist?

Creative Commons is exactly the tool you need for licensing; they even have a "build-your-own" customized license tool. The tool will generate an icon, text, and a link to easily understandable legalese for your license.

CC is like GPL (but more flexible) for art, and it's an awesome service.

I’m no expert, but would CC BY-SA do the trick?

Those look nice!

Have you considered a Creative Commons license, maybe with the BY-SA (Attribution-ShareAlike) terms?

This logo feels unbalanced, I don't have enough experience to say what is wrong, but it feels wrong.

Thanks for sharing. Maybe I will fork it and make it better.

Oh dude this is really awesome. Fresh.

Why is the white one wobbling?!?

I LOVE these! Great work!

I love Pingu.

I love Tux and these icons!

I now I also know how it's skull looks like :P

Looks nice, thanks to show it with us :)

Honestly I hope any of these variations replace the old logo. Looks great OP! Thanks for sharing

The middle one reminds me of Elan from The Order of the Stick

I could see something like this being a common use icon, it's very well done. I prefer this look to having the big bodied Tux on a small icon, this solves the problem well. Good job!

Very nice icon, would you consider contributing it to font-logos project (where a lot of FOSS projects logos are, including Tux) that is used on nerd-fonts so people can use it on their terminals? Nice to see SolveSpace being used for it. Edit: Fix typo.