I'd say yes, birds can learn from another species!
I had, at one point in time, 5 adult, flighted budgies. None of them were tame. Three were rehomes (probably previously pet store purchases) and two came from a breeder already as adults. (around a year old? not hand raised, either!) As an experiment, I decided to see what I could "do" with these birds. I had a really simple idea in mind! Just get them comfortable with me! I started out by feeding them every single morning with my hand inside the cage and some seeds in my hands. That's all I did for a couple of weeks!
[ame="https://www.youtube.com/watch?v=fUx81WHTUwk"]1 Bird in hand Leads to Many - YouTube[/ame]
After a month of working with them, I then had them flying out of the cage and to my hand for food! Birds that previously had no interest in me actually looking forward to "interacting" with me in the mornings and it was just a simple little thing!
[ame="https://www.youtube.com/watch?v=AlSm4uFZzVU"]More Budgies!!!! - YouTube[/ame]
That completed my experiment..... or so I thought! At the time, I also had 5 adult cockatiels of various "tameness" - from completely scared and skittish (avoids me at all costs) to previously hand raised and tame but then ignored for who knows how many years. Well, one of the hand raised and ignored cockatiels, Sunshine, decided to start following me around the room one day. This was abnormal behavior for her, as she didn't show any previous interest in me, which I was fine with. She even landed on me one day and I mistook her for Casey, my hand raised and tame/friendly cockatiel... except that Sunshine was heavier than Casey and she immediately took off soon after landing on me. Sunshine had landed behind my head so I didn't realize it was her until she took off and I turned to look. For two weeks, Sunshine continued following me around the room during feeding times and had even landed on me a second time before the light bulb finally went off! One day I tried feeding her by hand like I had done with the budgies and she happily accepted! She wasn't completely trusting of me, but it was her choice to interact with me in this manner. Over time that changed!
[ame="https://www.youtube.com/watch?v=q88bN30qOjo"]Sunshine in the Morning - YouTube[/ame]
Before I found Sunshine a new home (where she could get more physical interaction with humans since it was clear she wasn't just some aviary bird!

), Faye joined the flock. I don't know if Faye was parent raised or hand raised, what I do know is that she's been in at least 3 homes prior to my own and probably owned by idiots that entire time! Regardless, although she was new to the flock, she was watching Sunshine.... so obviously, I had to feed her by hand as well! (mind you, she didn't have to eat from my hand! There was food available in dishes and it was a "free for all" kind of meal!)
[ame="https://www.youtube.com/watch?v=R9w9w8nMRmw"]Hesitant Faye - YouTube[/ame]
As time progressed and Faye's confidence levels and trust grew, so did her desire for this simple little interaction! She would "demand" this behavior by following me around the room kind of like what Sunshine had done and wait for me to offer her food!
[ame="https://www.youtube.com/watch?v=rH9ZWxhCSAE"]Not So Hesitant Faye - YouTube[/ame]
Which lead to feeding the entire flock of cockatiels by hand! Including the most skittish bird who avoided me! That would be Pistachio (slightly bald head). Pistachio went from avoiding me to flying to my hand from the floor (where he couldn't see that I had food in my hand) and eating from my hand, or flying to my shoulder and patiently waiting for me to get food to feed him.
(ignore Casey... the third tiel climbing up my arm!)
[ame="https://www.youtube.com/watch?v=XjKmHswgiHs"]Cockatiel Feeding - April 24th - YouTube[/ame]
What I find most interesting about this is that although I have stopped feeding the tiels by hand, the most skittish bird, Pistachio, is the first one to eat from my hands without any qualms if I were to randomly feed them by hand one day! (Casey aside....) The other tiels have to warm up to the idea of doing it again.