Update(Decenber 2025):
Added files that bake actions and split them into separate animations(SeagullBlenderScaleBakeAnimSplitAction.zip, Blender4.5.1).
This makes NLA editing easier.
https://eizouasobi.blogspot.com/2024/04/efficient-use-of-blender-assets.html

3D model and animations of Seagull.

https://www.youtube.com/watch?v=m_rqebU0Dpw
SeagullMiddlePoly:
2331 Verts
2324 Faces
SeagullLowPoly:
554 Verts
612 Faces
Wing span is about 1.1m

Animation names are listed in the documentation. 

Note: To import UE5, I need 3dsMax.
How to import to the game engine