﻿122 
  NEW 
  YORK 
  STATE 
  MUSEUM 
  

  

  by 
  Bagg, 
  Auk, 
  volume 
  ii, 
  page 
  162. 
  Mr 
  Truman 
  R. 
  Taylor 
  has 
  noticed 
  

   it 
  as 
  an 
  irregular 
  migrant 
  in 
  Monroe 
  county. 
  

  

  The 
  Kittiwake 
  is 
  holarctic 
  in 
  range, 
  breeding 
  from 
  the 
  Gulf 
  of 
  St 
  

   Lawrence 
  to 
  80° 
  north 
  latitude. 
  Its 
  name 
  is 
  derived 
  from 
  the 
  call 
  notes 
  

   which 
  resemble 
  the 
  syllables 
  kitti-aa, 
  kitti-aa. 
  It 
  is 
  more 
  pelagic 
  in 
  haunts 
  

   than 
  any 
  of 
  our 
  other 
  species. 
  

  

  Larus 
  hyperboreus 
  Gunnerus 
  

  

  (Larus 
  glaucus 
  on 
  plate) 
  

  

  Glaucous 
  Gull 
  

  

  Plate 
  s 
  

  

  Larus 
  hyperboreus 
  Gunnerus 
  in 
  Leem, 
  Beskr. 
  Finm. 
  Lapper. 
  1767. 
  p. 
  22 
  (note) 
  

   Larus 
  glaucus 
  A. 
  O. 
  U. 
  Check 
  List. 
  Ed. 
  2. 
  1895. 
  No. 
  42 
  

  

  lams, 
  Gr. 
  Aapog 
  Lat. 
  lar'us, 
  gull; 
  hyperbo'reus, 
  Lat. 
  northern 
  

  

  Description. 
  Adult 
  in 
  summer: 
  White, 
  the 
  fiiantle 
  very 
  pale 
  pearl-blue; 
  

   primaries 
  all 
  white, 
  or 
  extremely 
  pale 
  pearl-gra}^ 
  fading 
  to 
  white 
  at 
  the 
  

   tips; 
  bill 
  chrome 
  yellow 
  with 
  a 
  vermilion 
  spot 
  at 
  the 
  angle; 
  feet 
  pale 
  flesh 
  

   color, 
  or 
  yellowish; 
  iris 
  yellow; 
  eyelid 
  vermilion; 
  mouth 
  flesh-color. 
  In 
  

   ■winter: 
  Head 
  and 
  neck 
  slightly 
  varied 
  with 
  brownish. 
  Second 
  ivinter: 
  

   Pure 
  ivhite, 
  sometiines 
  with 
  trace 
  of 
  the 
  brown 
  bars 
  and 
  mottlings 
  character- 
  

   istic 
  of 
  the 
  first 
  winter, 
  sometimes 
  with 
  a 
  trace 
  of 
  the 
  adult 
  plumage; 
  bill 
  

   flesh-colored 
  with 
  dusky 
  tip. 
  First 
  winter: 
  Dingy 
  white, 
  profusely 
  marked 
  

   with 
  pale 
  huffy 
  brown 
  or 
  drab 
  gray, 
  the 
  markings 
  being 
  coarse 
  bars 
  and 
  

   mottlings 
  on 
  the 
  back 
  and 
  wing 
  coverts, 
  obscure 
  streaks 
  on 
  the 
  head 
  and 
  

   neck, 
  obscure 
  bars 
  and 
  fine 
  mottlings 
  on 
  the 
  wings 
  and 
  tail; 
  under 
  parts 
  

   nearly 
  tmiform 
  pale 
  brownish 
  or 
  drab 
  gray; 
  legs 
  and 
  bill 
  flesh 
  color, 
  the 
  

   latter 
  tij^ped 
  with 
  black; 
  iris 
  brown; 
  the 
  primaries 
  "ecru 
  drab" 
  var^nng 
  to 
  

   dull 
  white. 
  The 
  plumage 
  gradually 
  fades 
  during 
  the 
  winter, 
  becoming 
  

   very 
  light 
  toward 
  spring. 
  

  

  Length 
  26-32 
  inches; 
  extent 
  60; 
  wing 
  16. 
  7-18. 
  75 
  ; 
  tail 
  7.4-8.5 
  ; 
  bill 
  2.3-3 
  ! 
  

   gape 
  3.75 
  ; 
  depth 
  of 
  bill 
  at 
  angle 
  .8-1 
  ; 
  tarsus 
  2.4-3.25 
  ; 
  middle 
  toe 
  and 
  claw 
  

   2.65-3. 
  Immature 
  birds 
  have 
  the 
  smaller 
  dimensions. 
  

  

  The 
  white 
  phase 
  of 
  this 
  gull 
  is 
  L 
  a 
  r 
  u 
  s 
  h 
  u 
  t 
  c 
  h 
  i 
  n 
  s 
  i 
  i 
  of 
  earlier 
  

   writers 
  and 
  probably 
  the 
  L. 
  arcticus 
  also. 
  According 
  to 
  Dr 
  Dwight 
  

   [Auk 
  23 
  : 
  30-34] 
  birds 
  of 
  the 
  third 
  winter 
  sometimes 
  show 
  the 
  plumage 
  which 
  

   is 
  most 
  characteristic 
  of 
  the 
  second 
  year, 
  and 
  sometimes 
  birds 
  of 
  the 
  second 
  

   winter 
  possess 
  the 
  mantle 
  and 
  white 
  body 
  feathers 
  of 
  the 
  adult. 
  

  

  