PS

*g(ʷ)amg(ʷ)am-, *gVmgVm- - kind of bird (SED II No. 78)

Akkadian
gamgammu - a bird (CAD G 32, AHw. 278)
Geez
gumgumā - pelican (CDG 194)
Tigre
gumguma - esp. d’oiseau (of bird) (WTS 570)
Tigrinya
gʷagʷəmma - bird which chirps when in numbers (TED 2378)