RealBirdID: Benchmarking Bird Species Identification in the Era of MLLMs. - Logan Lawrence; Mustafa Chasmai; Rangel Daroya; Wuao Liu; Seoyun Jeong; Aaron Sun; Max Hamilton; Fabien Delattre; Oindrila Saha; Subhransu Maji; Grant Van Horn (CoRR, 2026)