﻿202 
  THE 
  ZOOLOGIST. 
  

  

  Cromer. 
  Ninety 
  per 
  cent, 
  of 
  the 
  birds 
  he 
  saw 
  were 
  going 
  from 
  

   east 
  to 
  west, 
  which 
  again 
  corresponds 
  with 
  observations 
  made 
  

   at 
  Cromer, 
  with 
  which, 
  of 
  course, 
  Essex 
  must 
  have 
  much 
  in 
  

   common. 
  

  

  It 
  does 
  seem 
  that 
  the 
  direction 
  of 
  the 
  wind 
  is 
  one 
  important 
  

   key 
  to 
  the 
  right 
  understanding 
  of 
  migration 
  on 
  the 
  east 
  coast 
  of 
  

   England. 
  An 
  east 
  wind 
  blows 
  birds 
  here, 
  but 
  if 
  too 
  long 
  delayed 
  

   in 
  Europe 
  with 
  a 
  west 
  wind, 
  they 
  will 
  cross 
  the 
  North 
  Sea 
  with 
  

   that 
  rather 
  than 
  not 
  at 
  all, 
  but 
  then 
  they 
  do 
  not 
  arrive 
  until 
  

   daylight, 
  or 
  perhaps 
  continue 
  arriving 
  all 
  the 
  morning. 
  Also, 
  

   as 
  pointed 
  out 
  by 
  Mr. 
  Clarke, 
  birds 
  may 
  often 
  leave 
  Norway 
  and 
  

   Denmark 
  with 
  a 
  favourable 
  wind, 
  and 
  be 
  overtaken 
  while 
  en 
  route 
  

   by 
  changes 
  which 
  become 
  more 
  and 
  more 
  unfavourable 
  as 
  they 
  

   approach 
  the 
  English 
  coast. 
  To 
  understand 
  their 
  movements 
  

   one 
  wants 
  to 
  know 
  the 
  wind 
  on 
  both 
  sides 
  of 
  the 
  North 
  Sea, 
  and 
  

   this 
  the 
  Daily 
  Weather 
  Report 
  issued 
  by 
  the 
  Meteorological 
  Office 
  

   enables 
  us 
  to 
  do. 
  

  

  Norfolk 
  received 
  two 
  memorable 
  importations 
  during 
  the 
  

   autumn 
  of 
  1903 
  — 
  that 
  on 
  Sept. 
  19th 
  and 
  20th 
  composed 
  of 
  an 
  

   an 
  almost 
  unprecedented 
  number 
  of 
  small 
  land-birds 
  (Redstarts, 
  

   Pied 
  Flycatchers, 
  Robins, 
  &c), 
  and 
  that 
  of 
  the 
  Corvidcs 
  on 
  Oct. 
  

   19th 
  and 
  20th, 
  just 
  one 
  month 
  later. 
  The 
  former 
  movement 
  was 
  

   with 
  a 
  N.E. 
  wind 
  amounting 
  to 
  a 
  gale, 
  and 
  the 
  congested 
  hord 
  

   of 
  birds 
  was 
  at 
  its 
  maximum 
  at 
  the 
  usual 
  points 
  on 
  the 
  coast, 
  

   viz. 
  Blakenny 
  and 
  Wells 
  in 
  Norfolk, 
  Humber-mouth 
  in 
  Yorkshire, 
  

   Flamborough 
  Head, 
  and 
  the 
  mouth 
  of 
  the 
  Tees 
  (T. 
  H. 
  Nelson). 
  

   Yet 
  it 
  must 
  not 
  be 
  supposed 
  that 
  the 
  rest 
  of 
  the 
  coast 
  with 
  less 
  

   suitable 
  halting-places 
  did 
  not 
  receive 
  some 
  of 
  the 
  band. 
  The 
  

   second 
  migration 
  was 
  less 
  remarkable, 
  viz. 
  the 
  Rooks 
  and 
  Crows, 
  

   which 
  made 
  land 
  in 
  October, 
  with 
  a 
  moderate 
  S.W. 
  wind 
  following 
  

   on 
  a 
  high 
  wind 
  the 
  day 
  before 
  from 
  N.W. 
  ; 
  just 
  the 
  same 
  wind 
  

   they 
  came 
  with 
  last 
  year. 
  Our 
  shore-gunners 
  are 
  so 
  accustomed 
  

   to 
  look 
  out 
  for 
  the 
  approach 
  of 
  Rooks 
  in 
  October, 
  and 
  for 
  their 
  

   departure 
  in 
  March, 
  that 
  the 
  annually 
  recurring 
  phenomenon 
  

   has 
  ceased 
  to 
  excite 
  any 
  remark. 
  It 
  is 
  very 
  probable 
  that 
  

   among 
  these 
  bands 
  were 
  some 
  of 
  the 
  Grey 
  Crows 
  ringed 
  at 
  

   Rossiten, 
  in 
  East 
  Prussia, 
  by 
  Herr 
  J. 
  Thienemann. 
  From 
  

   Rossiten 
  to 
  Norfolk 
  is 
  six 
  hundred 
  miles 
  by 
  the 
  map. 
  Thiene- 
  

   mann 
  says 
  one 
  hundred 
  and 
  forty-eight 
  were 
  released 
  between 
  

  

  