New pinned? Eh, it's as good a time as any.
Hiya! I'm Sierra. I'm a trans woman, currently unemployed, but with an educational background in molecular biology and bioinformatics. I also like doing outdoorsy stuff. Im apparently a Big Blogger (tm) against my will. This blog is SFW in the strictest technical sense, but I freely talk about taboo stuff, and I'm really, REALLY bad about tagging.
This blog is my unfiltered dumpster heap for putting my random stuff. It hasn't been very active for a while, but if you want my clean, SFW, "hall of fame" collection, @hi-sierra is the best place for that.
As a general rule, I do not promote fundraisers unless I personally (as in, beyond tumblr) know the people involved.
The stuff I put here may include:
Discourse inducing takes, typically more for the purpose of journaling, venting, and inviting discussion in good faith rather than being polished theory
Rambles about the intersection of my science background and my existence as a trans woman, particularly about the biology of transfeminine HRT
Bad attempts at humor
Cataloguing outdoor adventures by being a vain bitch:
Thirst trap selfies:
Transition timelines:
Rambling about my adhd
Pictures of my adorable little Russian Tortoise:
I occasionally stream on a "when I feel like it" basis:
If you like me and want to support me while I job hunt in biotech and biology research, consider giving something to my ko-fi if you can spare it!
Support CatboyBiologist
I'm not SUPER active on other sites, but I do have other places I occasionally post. If I ever disappear from Tumblr, these are other places you can find me:
Bluesky
Youtube














