﻿NOTES 
  ON 
  DERBYSHIRE 
  ORNITHOLOGY. 
  107 
  

  

  of 
  the 
  summer 
  and 
  autumn 
  of 
  1903 
  seemed 
  to 
  have 
  the 
  effect 
  of 
  

   patting 
  a 
  stop 
  to 
  the 
  usual 
  outburst 
  of 
  autumn 
  song 
  on 
  the 
  

   part 
  of 
  the 
  Chiffehaff, 
  and 
  I 
  have 
  only 
  notes 
  of 
  having 
  heard 
  it 
  

   between 
  Sept. 
  20th 
  and 
  25th. 
  

  

  Mr. 
  G. 
  Pullen 
  kindly 
  drew 
  my 
  attention 
  to 
  a 
  hitherto 
  un- 
  

   recorded 
  specimen 
  of 
  Sabine's 
  Gull 
  (Xema 
  sabinii), 
  which 
  has 
  

   been 
  in 
  the 
  museum 
  at 
  Derby 
  since 
  1894, 
  in 
  which 
  year 
  it 
  was 
  

   shot 
  at 
  Chaddesden 
  about 
  Aug. 
  26th. 
  It 
  is 
  a 
  young 
  bird 
  with 
  

   the 
  black-bordered 
  tail 
  of 
  immaturity. 
  This 
  is 
  the 
  first 
  instance 
  

   of 
  the 
  occurrence 
  of 
  this 
  bird 
  in 
  Derbyshire. 
  

  

  F.B. 
  Whitlock, 
  in 
  1893, 
  estimated 
  the 
  total 
  number 
  of 
  species 
  

   which 
  have 
  occurred 
  in 
  the 
  county 
  at 
  241, 
  but 
  in 
  this 
  number 
  he 
  

   included 
  five 
  species 
  which 
  have 
  never 
  been 
  allowed 
  a 
  place 
  on 
  

   the 
  British 
  list, 
  viz. 
  the 
  Red-eyed 
  Flycatcher 
  (Vireo 
  olivaceus), 
  

   the 
  White-bellied 
  Swallow 
  (Tachycineta 
  bicolor), 
  the 
  Canada 
  

   Goose 
  (Bernicla 
  canadensis), 
  the 
  Egyptian 
  Goose 
  (Chenalopex 
  

   cegyptiaca), 
  and 
  the 
  Summer 
  Duck 
  (Aex 
  sponsa). 
  Seven 
  other 
  

   species 
  were 
  included 
  on 
  insufficient 
  and 
  in 
  some 
  cases 
  quite 
  

   erroneous 
  evidence, 
  thus 
  reducing 
  the 
  number 
  of 
  definitely 
  re- 
  

   corded 
  species 
  to 
  229 
  ; 
  but 
  more 
  recent 
  evidence 
  enables 
  us 
  to 
  

   restore 
  one 
  of 
  them 
  — 
  the 
  Blue-headed 
  Wagtail 
  (Motacilla 
  jlava) 
  — 
  

   to 
  the 
  list, 
  while 
  four 
  new 
  ones 
  have 
  been 
  added, 
  viz. 
  Montagu's 
  

   Harrier 
  (Circus 
  cineraceus), 
  the 
  Night 
  Heron 
  (Nycticorax 
  griseus), 
  

   Sabine's 
  Gull 
  {Xema 
  sabinii), 
  and 
  the 
  Black-throated 
  Diver 
  

   (Colymbus 
  arcticus) 
  ; 
  so 
  that 
  we 
  have 
  now 
  reasonable 
  proof 
  of 
  

   the 
  occurrence 
  of 
  234 
  species 
  within 
  our 
  limits. 
  

  

  