﻿BIRDS 
  OF 
  NEW 
  YORK 
  69 
  

  

  the 
  daih' 
  movements 
  of 
  these 
  birds 
  to 
  and 
  from 
  their 
  feeding 
  grounds 
  with 
  

   their 
  migratory 
  movement. 
  

  

  Another 
  indication 
  of 
  the 
  trend 
  of 
  a 
  bird 
  route 
  is 
  the 
  abundance 
  of 
  

   species 
  and 
  individuals 
  in 
  the 
  country 
  traversed, 
  and 
  when 
  sufficient 
  data 
  

   are 
  at 
  hand 
  is 
  as 
  infalHble 
  a 
  guide 
  as 
  the 
  flights 
  of 
  da}^ 
  migrants. 
  There 
  

   is 
  abundant 
  evidence 
  to 
  show 
  that 
  birds 
  are 
  far 
  more 
  numerous 
  during 
  

   both 
  the 
  spring 
  and 
  fall 
  migration 
  along 
  the 
  coast, 
  in 
  the 
  Hudson 
  valley 
  

   and 
  along 
  the 
  southern 
  shore 
  of 
  Lake 
  Ontario, 
  than 
  they 
  are 
  on 
  the 
  

   highlands 
  in 
  western 
  and 
  eastern 
  New 
  York. 
  

  

  A 
  third 
  and 
  very 
  important 
  guide 
  to 
  these 
  bird 
  routes 
  is 
  the 
  distribu- 
  

   tion 
  of 
  species 
  which 
  are 
  not 
  found 
  in 
  every 
  portion 
  of 
  the 
  State. 
  For 
  

   instance 
  there 
  can 
  be 
  little 
  doubt 
  that 
  the 
  Cerulean 
  warblers 
  which 
  breed 
  

   in 
  western 
  New 
  York 
  enter 
  that 
  region 
  from 
  the 
  west, 
  or 
  southwest, 
  where 
  

   that 
  species 
  is 
  found 
  both 
  in 
  the 
  breeding 
  and 
  migration 
  seasons. 
  The 
  same 
  

   is 
  true 
  of 
  the 
  Migrant 
  shrike 
  and 
  Prairie 
  horned 
  lark 
  which 
  originally 
  invaded 
  

   New 
  York 
  from 
  the 
  west 
  and 
  still 
  each 
  season 
  return 
  on 
  their 
  migrations 
  

   along 
  the 
  route 
  which 
  was 
  slowly 
  established 
  by 
  their 
  ancestors. 
  The 
  

   Orchard 
  oriole, 
  Grasshopper 
  sparrow, 
  and 
  Louisiana 
  water-thrush, 
  which 
  

   are 
  common 
  in 
  the 
  vicinity 
  of 
  New 
  York 
  city 
  and 
  are 
  also 
  found 
  as 
  far 
  

   north 
  as 
  Lake 
  George 
  but 
  are 
  not 
  common 
  in 
  the 
  Mohawk 
  valley, 
  undoubtedlv 
  

   travel 
  by 
  the 
  Hudson 
  valley 
  route 
  in 
  their 
  yearly 
  migrations, 
  as 
  is 
  also 
  

   true 
  of 
  many 
  other 
  species. 
  The 
  Yellow-breasted 
  chat, 
  which 
  is 
  rare 
  in 
  

   the 
  vicinity 
  of 
  Lake 
  Erie, 
  Lake 
  Ontario 
  and 
  the 
  Mohawk 
  valley, 
  but 
  is 
  

   fairh' 
  common 
  near 
  Binghamton, 
  Elmira, 
  and 
  the 
  southern 
  ends 
  of 
  the 
  

   Finger 
  Lakes, 
  undoubtedly 
  finds 
  its 
  way 
  up 
  the 
  Delaware 
  and 
  Susque- 
  

   hanna 
  valleys, 
  as 
  does 
  the 
  Kentucky 
  warbler 
  which 
  breeds 
  as 
  far 
  north 
  

   as 
  Cincinnatus, 
  and 
  the 
  Carolina 
  wren 
  which 
  has 
  bred 
  at 
  Ithaca. 
  There 
  

   is 
  no 
  doubt 
  that 
  the 
  Adirondack 
  birds 
  arrive 
  both 
  by 
  the 
  Hudson 
  and 
  the 
  

   Ontario 
  routes; 
  those 
  of 
  the 
  western 
  and 
  northern 
  portions 
  coming 
  

   bv 
  way 
  of 
  the 
  southern 
  shore 
  of 
  Lake 
  Ontario, 
  where 
  all 
  the 
  species 
  

   common 
  in 
  the 
  western 
  Adirondacks 
  are 
  abundant 
  in 
  migration 
  time, 
  

   while 
  those 
  of 
  the 
  eastern 
  Adirondacks 
  come 
  by 
  way 
  of 
  the 
  Hudson 
  valley. 
  

  

  