Not sure if this meets your criteria, yet iNaturalist [1] is kind of "gamified". Has a rather large "bird" taxon observation amount. 38,393,861 observations, 11,165 species, 1,130,700 observers, 188,988 identifiers (people who identify species from your pictures)

When Romania announced that the Lesser Kestrel had returned after 100 years iNaturalist actually had several of the observations in the nearby area. [2]

[1] https://www.inaturalist.org/observations?subview=map&taxon_i...

[2] https://www.inaturalist.org/observations?subview=map&taxon_i...

I guess it's not intensely gamified, but I have a couple friends at like 80-90% on Merlin. It's their excuse to travel and live abroad

This is actually exactly what I’ve been working on as a passion project for the last year and a half: https://apps.apple.com/us/app/wings-whistles/id6503321263

It’s basically a gamified version of Merlin. Would love any and all feedback!

Birdle Go seems really cool, very impressed and would love to test that!

Any chance you'll release an android version?

Yes! I’m aiming to release it by January at the latest. I’m using tflite rather than coreml so that the transition is easier.

What’s missing from eBird?

Certainly gamified a bit as I learned from:

LISTERS: A Glimpse Into Extreme Birdwatching

https://youtube.com/watch?v=zl-wAqplQAo

1.9m view | 2mo ago | 2hr long (buckle in, documentary by a couple young goofball brothers)

I want something more gamified. I want to go on missions or complete challenges or something. Not just identity and log stuff.

I'll think of ways to bridge the virtual world with the real world birding one. Let me know if you have any ideas for that :)