Study Suggests Becoming An Expert Bird Watcher May Protect Brain Health

Research found that participants who were expert bird watchers showed “differences in both brain structure and brain activity.”

Study Suggests Becoming An Expert In This Beloved Hobby May Actually Protect Your Brain

Research found that participants who were experts in this pastime showed "differences in both brain structure and brain activity."

HuffPost
I mean, become an expert at anything and then use that expertise daily. That should get the same result.
Similar but not the same most likely. Bird watching requires training and practicing certain mental capabilities (attention, awareness, etc). Some other skill mastery may require developing different mental skills (mindfulness, focus, memory, imagination, etc).