﻿BIRDS 
  OF 
  NEW 
  YORK 
  73 
  

  

  It 
  often 
  happens 
  that 
  a 
  species 
  is 
  reported 
  on 
  a 
  given 
  date 
  far 
  to 
  the 
  

   north 
  of 
  stations 
  where 
  it 
  has 
  not 
  yet 
  been 
  observed. 
  This 
  also 
  indicates 
  

   that 
  the 
  species 
  is 
  not 
  always 
  reported 
  on 
  the 
  first 
  day 
  of 
  its 
  arrival, 
  and 
  

   the 
  most 
  reliable 
  reports 
  result 
  from 
  the 
  combined 
  observation 
  of 
  several 
  

   observers 
  who 
  divide 
  the 
  country 
  between 
  them. 
  

  

  In 
  comparing 
  the 
  average 
  dates 
  of 
  40 
  species 
  for 
  the 
  years 
  1880, 
  1882 
  

   and 
  1883 
  at 
  Ossining, 
  Springville 
  and 
  Locust 
  Grove, 
  we 
  find 
  25 
  earliest 
  

   at 
  Ossining, 
  14 
  at 
  Springville, 
  and 
  i 
  (the 
  Hermit 
  thrush) 
  at 
  Locust 
  Grove. 
  

   At 
  Locust 
  Grove 
  30 
  appeared 
  latest, 
  at 
  Springville 
  7, 
  and 
  at 
  Ossining 
  3. 
  

   The 
  grand 
  average 
  of 
  these 
  40 
  species 
  was 
  two 
  and 
  one 
  fourth 
  days 
  

   earlier 
  at 
  Ossining 
  than 
  at 
  Springville, 
  and 
  four 
  and 
  two 
  thirds 
  days 
  earlier 
  

   than 
  at 
  Locust 
  Grove. 
  This 
  average 
  probably 
  indicates 
  correctly 
  the 
  general 
  

   progress 
  of 
  migration 
  in 
  the 
  State, 
  but 
  the 
  difference 
  in 
  the 
  time 
  of 
  arrival 
  

   will 
  usually 
  be 
  much 
  greater 
  in 
  the 
  case 
  of 
  the 
  early 
  migrants 
  than 
  those 
  

   which 
  come 
  during 
  the 
  warm 
  waves 
  of 
  early 
  May. 
  

  

  The 
  birds 
  at 
  Springville, 
  and 
  of 
  western 
  New 
  York 
  in 
  general, 
  come 
  

   mosth' 
  by 
  way 
  of 
  the 
  Mississippi 
  valley 
  or 
  the 
  western 
  slope 
  of 
  the 
  Alleghany 
  

   plateau, 
  and 
  as 
  migration 
  in 
  the 
  interior 
  is 
  earlier 
  than 
  along 
  the 
  coast 
  of 
  

   the 
  United 
  States 
  in 
  our 
  latitude, 
  it 
  is 
  evident 
  that 
  those 
  species 
  which 
  

   are 
  earliest 
  at 
  Springville 
  are 
  migrants 
  from 
  the 
  interior. 
  Some 
  species, 
  

   however, 
  which 
  surely 
  come 
  to 
  western 
  New 
  York 
  by 
  way 
  of 
  the 
  interior, 
  

   are 
  later 
  than 
  at 
  Ossining, 
  as 
  in 
  the 
  case 
  of 
  the 
  Palm 
  warbler. 
  This, 
  however, 
  

   is 
  a 
  different 
  geographic 
  race 
  from 
  the 
  Yellow 
  palm 
  warbler 
  which 
  is 
  found 
  

   at 
  Ossining, 
  and 
  its 
  chief 
  migration 
  route 
  is 
  far 
  to 
  the 
  west 
  of 
  New 
  York. 
  

   Thus 
  the 
  Palm 
  warblers 
  which 
  reach 
  New 
  York 
  are 
  out 
  of 
  their 
  proper 
  

   course 
  and 
  might 
  be 
  expected 
  to 
  be 
  late. 
  

  

  The 
  observers 
  who 
  made 
  these 
  migration 
  records 
  are 
  as 
  follows: 
  

  

  Staten 
  Island 
  William 
  P. 
  Heineken 
  

   Long 
  Island 
  City 
  W. 
  F. 
  Hendrickson 
  

  

  Shelter 
  Island 
  W. 
  W. 
  Worthington 
  

  

  New 
  burgh 
  F. 
  B. 
  Robinson 
  

  

  Carmel 
  W. 
  A. 
  Mead 
  

  

  Stanfordville 
  Mary 
  Hyatt 
  

  

  Ballston 
  Spa 
  S. 
  R. 
  Ingersoll 
  

  

  