Flocking fowl

Flock \Flock\, v. i. [imp. & p. p. {Flocked}; p. pr. & vb. n.
   {Flocking}.]
   To gather in companies or crowds.
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         Friends daily flock.                     --Dryden.
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   {Flocking fowl} (Zool.), the greater scaup duck.
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Scaup \Scaup\ (sk[add]p), n. [See {Scalp} a bed of oysters or
   mussels.]
   1. A bed or stratum of shellfish; scalp. [Scot.]
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   2. (Zool.) A scaup duck. See below.
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   {Scaup duck} (Zool.), any one of several species of northern
      ducks of the genus {Aythya}, or {Fuligula}. The adult
      males are, in large part, black. The three North American
      species are: the greater scaup duck ({Aythya marila}, var.
      nearctica), called also {broadbill}, {bluebill},
      {blackhead}, {flock duck}, {flocking fowl}, and {raft
      duck}; the lesser scaup duck ({Aythya affinis}), called
      also {little bluebill}, {river broadbill}, and {shuffler};
      the tufted, or ring-necked, scaup duck ({Aythya
      collaris}), called also {black jack}, {ringneck},
      {ringbill}, {ringbill shuffler}, etc. See Illust. of
      {Ring-necked duck}, under {Ring-necked}. The common
      European scaup, or mussel, duck ({Aythya marila}), closely
      resembles the American variety.
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