﻿FULVOUS 
  TREE-DUCK. 
  83 
  

  

  Dendrocygna 
  autunmalis 
  (Linn.). 
  Black-bellied 
  Tree-duck. 
  

  

  This 
  tree 
  duck 
  comes 
  into 
  the 
  United 
  States 
  in 
  the 
  lower 
  Rio 
  

   Grande 
  Valley 
  and 
  breeds 
  as 
  far 
  north 
  as 
  Corpus 
  Christi 
  ; 
  it 
  arrives 
  

   in 
  April, 
  the 
  bulk 
  leave 
  in 
  September 
  and 
  the 
  last 
  in 
  November. 
  It 
  

   ranges 
  throughout 
  most 
  of 
  Middle 
  America 
  from 
  western 
  Mexico 
  

   (Mazatlan) 
  to 
  Panama 
  (River 
  Truando) 
  ; 
  accidental 
  in 
  Jamaica. 
  It 
  win- 
  

   ters 
  in 
  Mexico 
  at 
  least 
  as 
  far 
  north 
  as 
  central 
  Vera 
  Cruz 
  (Vega 
  del 
  

   Casadero) 
  and 
  Mazatlan. 
  North 
  of 
  this 
  district 
  it 
  is 
  strictly 
  migra- 
  

   tory, 
  and 
  throughout 
  most, 
  if 
  not 
  all, 
  of 
  its 
  range 
  in 
  Central 
  America 
  

   there 
  seems 
  to 
  be 
  a 
  shifting 
  of 
  location 
  between 
  the 
  winter 
  and 
  the 
  

   summer 
  homes, 
  but 
  no 
  data 
  are 
  available 
  to 
  determine 
  the 
  movements 
  

   with 
  accurac}'. 
  

  

  Dendrocygna 
  fulva 
  (Gmel. 
  ). 
  Fulvous 
  Tree-duck. 
  

  

  Resident 
  in 
  southern 
  Louisiana 
  (Lake 
  Catharine, 
  The 
  Rigolets, 
  New 
  

   Orleans) 
  and 
  from 
  Mexico 
  north 
  to 
  central 
  Texas 
  (Galveston, 
  North 
  

   Concho 
  River), 
  southern 
  Arizona 
  (Fort 
  Whipple),^ 
  central 
  California, 
  

   and 
  west 
  central 
  Nevada 
  (Lake 
  Washoe). 
  In 
  California 
  the 
  species 
  has 
  

   been 
  found 
  breeding 
  north 
  to 
  Los 
  Banos 
  in 
  the 
  San 
  Joaquin 
  Valley, 
  

   has 
  been 
  taken 
  in 
  winter 
  in 
  the 
  Sacramento 
  Valley 
  (Marysville), 
  

   and 
  has 
  been 
  noted 
  probably 
  as 
  a 
  straggler 
  in 
  Marin 
  County 
  (Inverness). 
  

   The 
  breeding 
  range 
  in 
  Mexico 
  is 
  from 
  Lake 
  Chapala, 
  Lake 
  Cuitzeo, 
  and 
  

   the 
  Valley 
  of 
  Mexico 
  northward, 
  while 
  in 
  winter 
  the 
  species 
  passes 
  

   south 
  to 
  Guerrero 
  and 
  Chiapas. 
  It 
  has 
  occurred 
  in 
  Lower 
  California. 
  

  

  An 
  unusual 
  case 
  of 
  wandering 
  occurred 
  in 
  the 
  fall 
  of 
  1905. 
  A 
  flock 
  

   of 
  ten 
  was 
  seen 
  at 
  Grays 
  Harbor, 
  Washington, 
  on 
  October 
  3, 
  and 
  

   one 
  was 
  secured. 
  A 
  straggler 
  was 
  taken 
  at 
  Swan 
  Island, 
  North 
  Caro- 
  

   lina, 
  in 
  July, 
  1886. 
  

  

  The 
  migration 
  habits 
  of 
  the 
  fulvous 
  tree-duck 
  are 
  peculiar; 
  one 
  of 
  

   the 
  most 
  northern 
  records 
  (Marysville, 
  Cal.) 
  is 
  of 
  a 
  winter 
  specimen, 
  

   and 
  almost 
  the 
  most 
  southern 
  (Lake 
  Cuitzeo, 
  Mexico) 
  is 
  of 
  breeding 
  

   birds. 
  While 
  the 
  species 
  as 
  a 
  whole 
  moves 
  north 
  to 
  breed 
  and 
  south 
  

   to 
  winter 
  — 
  these 
  movements 
  occurring 
  in 
  April 
  and 
  October 
  — 
  a 
  few 
  

   remain 
  throughout 
  the 
  year 
  in 
  most 
  of 
  the 
  range. 
  

  

  The 
  same 
  species 
  is 
  found 
  in 
  South 
  America, 
  where 
  it 
  breeds 
  com- 
  

   monly 
  in 
  the 
  vicinity 
  of 
  Buenos 
  Aires, 
  and 
  occurs 
  thence 
  north 
  

   through 
  Uruguay 
  and 
  Rio 
  Grande 
  do 
  Sul, 
  Brazil, 
  to 
  central 
  Paraguay 
  

   (Asuncion) 
  and 
  northern 
  Argentina 
  (Tucuman, 
  Fortin 
  Donovan). 
  

   Accidentals 
  have 
  been 
  noted 
  in 
  central 
  Chile 
  (Paine), 
  northern 
  Peru 
  

   (Moyobamba), 
  northwestern 
  Ecuador 
  (Vinces), 
  and 
  east 
  central 
  Brazil 
  

   (Port 
  Capuno, 
  Rio 
  Belmonte). 
  Questionable 
  records 
  appear 
  from 
  

   Venezuela 
  and 
  the 
  Island 
  of 
  Trinidad. 
  

  

  The 
  migration 
  habits 
  of 
  the 
  fulvous 
  tree-duck 
  in 
  South 
  America 
  are 
  

   the 
  same 
  as 
  in 
  North 
  America; 
  a 
  few 
  are 
  resident 
  at 
  either 
  extreme 
  of 
  

  

  