Notes
Slide Show
Outline
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Coming up ………
  • Where they breed
  • Where they winter
  • Identification
  • Color morphs
  • Juveniles (first year birds)
  • A note about neck bands
  • Snippets of useless information
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Lesser Snow Goose
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Lesser Snow Goose
  • Western population breeds from n Alaskan coast eastwards to Banks (NWT) and Victoria (NU) Islands of arctic Canada.
  • Midcontinent population breeds from e Victoria Island south to Pelly Lake (NU), e to sw Baffin Is, s to Southampton Is. and along w coast of Hudson Bay (NU/MAN) to mid-James Bay (NU) and on east coast of Hudson Bay (PQ).
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Lesser Snow Goose
  • Western population winters from s BC through WA and OR to CA, coastal lowlands of nw Mexico, sw AZ, se CO, s NM and Chihuahua and s on central plateau of Mexico to c Jalisco.
  • Midcontinent population winters from se NE s through e KS, e OK and e TX; east through s-c IA, c IL, s through w KT, w TN and w AL to Gulf coast, LA and TX s to n Tamaulipas.
  • Highest densities along Missouri River and LA and TX Gulf coast.
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Greater Snow Goose
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Greater Snow Goose
  • Breeds from ne Ellesmere Is (Nunavut Territory, NU), Axel Heiberg Is, Devon & Bylot Is., to n & nw Baffin Island and to west of Baffin & Ellesmere Islands. Also Thule, Greenland.


  • Small numbers on Somerset, Prince of Wales and Bathurst Islands.
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Greater Snow Goose
  • Winters along Atlantic coast from MA to SC.
  • Main concentrations in NJ (Forsythe NWR), se PA (lower Susquehanna River), DE (Bombay Hook, Prime Hook NWRs), MD, VA (Chincoteague NWR) and NC (Pea Island NWR).
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Ross’ Goose
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Ross’ Goose
  • 95% Breed in the Queen Maud Gulf Migratory Bird Sanctuary in NWT in the central Canadian Arctic.
  • Remainder along w and s coasts of Hudson Bay, Southampton I., sw Baffin I., Banks I.
  • Colonial breeder, usually with Lesser Snow Geese.
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Ross’ Goose

  • Main wintering area is the Central Valley of CA.


  • Increasing numbers winter in se CO, w OK, NM, n TX and nc Highlands of Mexico. Also Gulf coasts of LA and TX.
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Identification - Size
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Identification - size
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I.d. – Greater and Lesser
  • Very similar overall other than size.
  • Size difference only obvious when both subspecies together.
  • Both have “grinning patches”.
  • For our area, look for smaller headed, short-billed, smaller bodied snow goose amongst the Greaters.
  • Lesser often mistaken for Ross’ or hybrid.
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Identification - bills
  • Lesser and Greater have ‘grinning patches’ - tomia of both mandibles are black. Ross’ does not have an obvious grinning patch.
  • Head feathering on Greater and Lesser extends onto bill in a U-shape. Ross’ feathering meets the bill in a vertical line.
  • Bill of adult Greater & Lesser uniform pink. Bill of Ross’ pink with olive-gray to purple caruncles on basal end of upper mandible.
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I.d. – Snow vs Ross’
  • Ross’ has small, rounded head
  • Ross’ has no prominent grinning patch
  • Ross’ has relatively short neck
  • Ross’ has stubby, triangular bill
  • Ross’ has dark ‘warts’ at base of bill
  • Ross’ always lacks yellow head staining


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Ross’ vs Lesser Snow
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Juveniles – white morph
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Juveniles – blue morph
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Color Morphs
  • Type 1 (+2) “pure white” with 7 black primaries and little or no gray on coverts.


  • Type 7 (+6) “pure blue” with all underparts gray and mostly pale (or white) between legs and tail.


  • Blue phase Ross’ Goose (rare) thought to be result of white Ross’/blue Lesser Snow.


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A note about neckbands
  • Usually black letters/numbers on yellow.


  • Often easy to read with a scope.


  • Double-check the code (or get a second opinion).


  • Send to: http://www.pwrc.usgs.gov/bbl


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Neckbands
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Aforementioned “snippets”
  • Ross’s Goose is named after Bernard Rogan Ross (1827-1874), chief trader with Hudson’s Bay Company. Ross’s Gull is named after James Clark Ross (1800-1862), Royal Navy officer.
  • The Cree word for Snow Goose is ‘Wawa’.
  • Transit time of food in gut 1-2 hr; defacation rate 15 dropping/hr in marsh, 6 droppings/hr in small grain cereal fields.
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