Great Frigatebird male (Fregata minor ridgwayi) resting his head on his inflated gular (throat) pouch, Prince Philip's Steps, Genovesa, Galapagos Islands
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Great Frigatebird male (Fregata minor ridgwayi) resting his head on his inflated gular (throat) pouch, Prince Philip's Steps, Genovesa, Galapagos Islands
Wouldn't it be useful for long haul air travel if we had an in-built inflatable neck pillow?