﻿BIRDS 
  OF 
  NEW 
  YORK 
  II7 
  

  

  Joe's 
  lake, 
  Herkimer 
  co., 
  N. 
  Y. 
  Aug. 
  27, 
  1886. 
  Juvenal. 
  Ralph 
  & 
  Bagg, 
  p. 
  104 
  

  

  Niagara 
  river, 
  N. 
  Y. 
  Sept. 
  1887. 
  Juvenal. 
  Harr^^ 
  Lansing 
  

  

  Little 
  Gull 
  Island, 
  L. 
  L 
  Aug. 
  6-16, 
  1888. 
  (common). 
  Dutcher, 
  Auk, 
  6:125 
  

  

  Sept. 
  18, 
  1888. 
  (50). 
  (Field). 
  

   " 
  Sept. 
  20, 
  1888. 
  (15). 
  " 
  

  

  Aug. 
  24, 
  1889. 
  (2). 
  

   Canoe 
  lake, 
  L. 
  I. 
  Aug. 
  25, 
  1890. 
  

   South 
  Oyster 
  Bay, 
  L. 
  I. 
  Sept. 
  10, 
  1891. 
  cJ*. 
  

   Rockaway, 
  L. 
  I. 
  July 
  29, 
  1893. 
  (3)- 
  

   Montauk, 
  L. 
  I. 
  Nov. 
  15, 
  1894. 
  

   Buffalo, 
  N. 
  Y. 
  Oct. 
  2, 
  1895. 
  James 
  Savage 
  

  

  Lake 
  Ontario, 
  Monroe 
  co., 
  N. 
  Y. 
  Nov. 
  10, 
  1897. 
  George 
  Guelph 
  

   Buffalo, 
  N. 
  Y. 
  About 
  Oct. 
  25, 
  1907. 
  (Grieb). 
  James 
  Savage 
  

   Long 
  Island, 
  N. 
  Y. 
  "Apr. 
  30 
  (Rockaway) 
  ; 
  Aug. 
  6-Nov. 
  9 
  (Amity 
  ville)." 
  Braislin, 
  p. 
  35 
  

  

  Stercorarius 
  longicaudus 
  Vieillot 
  

  

  Long-tailed 
  jaeger 
  

  

  Plate 
  4 
  

  

  Stercorarius 
  longicaudus 
  Vieillot. 
  Nouveau 
  Dictionnaire. 
  1819. 
  30: 
  157 
  

   Lestris 
  buffoni 
  (?) 
  DeKay. 
  Zool. 
  N. 
  Y. 
  1844. 
  pt 
  2, 
  p. 
  314, 
  fig. 
  291 
  

   Stercorarius 
  longicaudus 
  A. 
  O. 
  U. 
  Check 
  List. 
  Ed. 
  2. 
  1895. 
  No. 
  38 
  

  

  lon'gicau'dus, 
  Lat., 
  longus, 
  long, 
  and 
  cauda, 
  tail 
  

  

  Description, 
  Colors 
  and 
  color 
  phases 
  practically 
  the 
  same 
  as 
  in 
  Parasitic 
  

   and 
  Pomarine 
  jaegers, 
  but 
  the 
  dark 
  phase 
  is 
  apparently 
  of 
  rare 
  occurrence. 
  

   The 
  tarsus 
  leaden 
  blue, 
  tibiae 
  and 
  feet 
  black. 
  The 
  shafts 
  of 
  the 
  first 
  2 
  or 
  3 
  

   primaries 
  white, 
  the 
  others 
  brownish, 
  an 
  abrupt 
  change 
  from 
  white 
  to 
  brown 
  

   at 
  the 
  third 
  primary. 
  

  

  Length 
  17-23 
  inches; 
  wing 
  11. 
  75-12. 
  5; 
  tail 
  14-16, 
  the 
  central 
  feathers 
  

   projecting 
  8—10 
  inches 
  in 
  the 
  adult; 
  bill 
  1.1-1.3; 
  tarsus 
  1.5-1.8; 
  tibia 
  bare 
  

   .75 
  ; 
  middle 
  toe 
  and 
  claw 
  i. 
  4-1. 
  65. 
  Young 
  smaller, 
  the 
  central 
  tail 
  feathers 
  

   projecting 
  only 
  a 
  short 
  distance, 
  making 
  the 
  total 
  length 
  much 
  less 
  than 
  

   recorded 
  for 
  the 
  adult, 
  wing 
  9.5-1 
  1.25. 
  

  

  Distinctive 
  marks. 
  Adult 
  birds 
  of 
  this 
  species 
  are 
  easily 
  recognized 
  

   by 
  the 
  excessive 
  elongation 
  of 
  the 
  central 
  pair 
  of 
  tail 
  feathers, 
  the 
  shorter 
  

   and 
  weaker 
  bill 
  and 
  lighter 
  bulk 
  of 
  body. 
  The 
  young 
  are 
  also 
  smaller 
  than 
  

   those 
  of 
  the 
  Parasitic 
  jaeger 
  and 
  the 
  mottling 
  and 
  marbling 
  is 
  of 
  a 
  

   prevailing 
  leaden 
  grayish 
  ; 
  the 
  tarsus 
  is 
  relatively 
  longer 
  than 
  in 
  parasit- 
  

   icus, 
  being 
  longer 
  than 
  the 
  middle 
  toe 
  and 
  its 
  claw, 
  while 
  the 
  reverse 
  

  

  