How much is instinct and how much is taught?

Ever since I was a child with a conciousness I was aware of being gentle to mother natures creatures.
I was connected to nature without much thought too.

I remember many fond interactions with wildlife.

And of course my recent endevor with a baby bird. A small sparrow I noticed on the ground at the park. My friend says he was about a week old.
Despite never having had cared for one before? The little pip survived overnight with ample feeding and warmth.
Found our old heating pad and set em up in a makeshift nest, and dug in my yard for worms.
However I did not expect the social theatrics that came with it.
This act of saving the bird was not the natural occurance for my friend- not only what appeared to be be apathy for this small creature- but self admitted jelousy of it taking our time away from them.
Something I still try and wrap my head around honestly. I hold no grudge with it- but I certainly do ponder how you come to such a though process.
Where does one find jelousy in their heart for something so helpless? As yes, we did intend to hang out that day of course- but to then insinuate that your time is more important than not just this bird- but our own?
Well it was certainly a point of conflict briefly for a reason. Something I had some choice words about. Long story short: I was rather blunt/harsh to say "What the fuck" essentially.
That I out of people out there could act like my time is far more important due to how it could be more limited- yet don't (Often. This was one of the few times I did.).
And how childish/crazy such a statement was: I am jelous you all rescued and tended to a baby bird, instead of paying attention to me.
We have since absolved it of course, as I said- no grudges. Another interesting introspect into the human mind for sure- the things that do and don't come naturally.

Shoutout to my partner- dedicated bird parent right alongside me.