﻿134 
  NEW 
  YORK 
  STATE 
  MUSEUM 
  

  

  describes 
  its 
  call 
  as 
  "a 
  long-drawn, 
  clear 
  note 
  on 
  a 
  high 
  key, 
  sounding 
  not 
  

   unlike 
  the 
  more 
  excited 
  call 
  note 
  of 
  the 
  domestic 
  goose 
  ; 
  and 
  every 
  now 
  and 
  

   then 
  it 
  would 
  give 
  its 
  prolonged 
  weird 
  laughter, 
  which 
  has 
  given 
  rise 
  to 
  its 
  

   common 
  name. 
  To 
  one 
  who 
  has 
  heard 
  it, 
  it 
  might 
  be 
  imitated 
  by 
  the 
  

   syllables 
  hah-ha-ha-ha-ha, 
  hah-hah-hah-hah-hah 
  , 
  all 
  of 
  which 
  are 
  uttered 
  on 
  

   a 
  high, 
  clear 
  tone, 
  the 
  last 
  three 
  or 
  four 
  syllables, 
  and 
  especially 
  the 
  last 
  

   one, 
  being 
  drawn 
  out 
  with 
  peculiar 
  and 
  prolonged 
  effect." 
  

  

  Larus 
  Philadelphia 
  (Ord) 
  

   Bonaparte 
  Gull 
  

  

  Plate 
  6 
  

  

  Sterna 
  Philadelphia 
  Ord. 
  Guthrie's 
  Geography, 
  Am. 
  Ed. 
  2. 
  1815. 
  2:319 
  

   Larus 
  bonapartii 
  DeKay. 
  Zool. 
  N. 
  Y. 
  1844, 
  pt 
  2, 
  p. 
  311, 
  fig. 
  287, 
  288 
  

   Larus 
  Philadelphia 
  A. 
  O. 
  U. 
  Check 
  List. 
  Ed. 
  2. 
  1895. 
  No. 
  60 
  

  

  Philadelphia, 
  the 
  city 
  of 
  Philadelphia, 
  Pa. 
  

  

  Description. 
  Head 
  and 
  throat 
  blackish 
  slate-color; 
  neck, 
  under 
  parts 
  

   nnd 
  tail 
  pure 
  white; 
  breast 
  and 
  belly 
  with 
  rosy 
  tinge; 
  white 
  patch 
  on 
  the 
  

   under 
  and 
  upper 
  eyelid; 
  back 
  and 
  wings 
  light 
  pearl-gray; 
  primaries 
  mostly 
  

   white 
  with 
  black 
  tips, 
  the 
  outer 
  webs 
  of 
  the 
  iirst 
  and 
  second 
  margined 
  with 
  

   black; 
  bill 
  black; 
  feet 
  orange-red; 
  iris 
  dark 
  brown; 
  eyelids 
  and 
  mouth 
  car- 
  

   mine. 
  In 
  winter: 
  Head 
  and 
  throat 
  white, 
  washed 
  on 
  the 
  back 
  of 
  the 
  head 
  

   with 
  grayish; 
  no 
  rosy 
  tinge 
  below; 
  feet 
  flesh-color; 
  dusky 
  spot 
  in 
  front 
  of 
  

   eye 
  and 
  below 
  the 
  ear. 
  First 
  winter 
  plumage: 
  Similar 
  to 
  the 
  adult 
  in 
  

   winter, 
  but 
  the 
  ear 
  spot 
  more 
  distinct; 
  scapulars, 
  wing 
  coverts 
  and 
  second- 
  

   aries 
  varied 
  with 
  dusky 
  brown; 
  tail 
  with 
  a 
  subterminal 
  blackish 
  bar; 
  bill 
  

   dusky 
  flesh-color 
  tipped 
  with 
  black; 
  feet 
  pale 
  flesh-color. 
  

  

  Length 
  12-15 
  inches; 
  extent 
  32-34; 
  wing 
  10-10. 
  5; 
  tail 
  4; 
  bill 
  1.2; 
  

   gape 
  1.75; 
  depth 
  of 
  bill 
  at 
  nostril 
  .25; 
  tarsus 
  1.4; 
  r-.iddle 
  toe 
  and 
  claw 
  1.4. 
  

  

  Distinctive 
  marks. 
  In 
  plate 
  6 
  the 
  distinctive 
  wing 
  pattern 
  and 
  

   head 
  colors 
  of 
  this 
  species, 
  both 
  in 
  the 
  mature 
  and 
  immature 
  specimens, 
  

   are 
  clear 
  bv' 
  shown. 
  An 
  immature 
  Kittiwake 
  is 
  sometimes 
  mistaken 
  for 
  

   this 
  species, 
  but 
  the 
  former 
  may 
  be 
  recognized 
  by 
  its 
  dark 
  feet 
  with 
  no 
  

   hind 
  toe, 
  the 
  duskv 
  band 
  across 
  the 
  back 
  of 
  its 
  head 
  and 
  its 
  different 
  wine 
  

   pattern. 
  The 
  young 
  Laughing 
  gull 
  is 
  inuch 
  darker 
  on 
  the 
  wing 
  tips 
  and 
  

   upper 
  parts, 
  is 
  larger, 
  and 
  has 
  a 
  much 
  larger 
  bill 
  and 
  legs. 
  

  

  