[1] The specific epithet birdsongi is derived from the surname of American ichthyologist Ray S. Birdsong, in honor of his work regarding gobioid osteology and systematics.

[1] Boleophthalmus birdsongi have a cylindrical head of similar width and depth, compressed body, and subterminal (downward-turned) mouth.

[1] Juveniles are entirely grey with vertical bars of dark brown, but lack the lateral line stripe.

[4] Boleophthalmus birdsongi is the only species of its genus to have a lateral line stripe and lack a lower jaw teeth notch.

[2] Adults and juveniles experience habitat separation, where adults inhabit areas of mud or muddy sand that can be level or sloping, as well as either smooth or irregular, at these low intertidal zone heights, while juveniles, 22–66 millimetres (0.87–2.60 in) in length, inhabit muddy areas that are level and smooth at these highest intertidal height.

[4] Like other Boleophthalmus species, adults maintain burrows in the mudflat substrate to hide in when threatened and reside in when covered by the tide.