Gibson Hummingbird Acoustic-Electric Guitar The Gibson Hummingbird has a Mahogany back and sides with a Sitka Spruce top. Hand-scalloped, radiused top bracing. Rosewood fingerboard with parallelogram inlays and a slim taper profile neck. This Legendary guitar is loaded with an L.R. Baggs Element pickup and Nickel Grover Rotomatic tuning machines.