Meaning of the Sanskrit Word: nabhaukasah

  nabhaukasah—birds    SB 2.10.37, SB 2.10.38, SB 2.10.39, SB 2.10.40, SB 2.10.37-40
  nabhaukasah—the inhabitants of the sky, or the birds    SB 2.6.13, SB 2.6.14, SB 2.6.15, SB 2.6.16, SB 2.6.13-16

Can't find any compound Sanskrit words containing nabhaukasah.