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Montana Animal Field Guide

Montana Field Guides

Northern Shoveler - Anas clypeata

  • Northern Shoveler, Male
  • Northern Shoveler Photo
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Global Rank: G5
State Rank: S5B

Agency Status
USFWS: none
USFS: none
BLM: none
CFWCS Tier: 3
PIF: none
 

General Description
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General Distribution
Montana Range



Western Hemisphere Range

 


Summary of Observations Submitted for Montana
Number of Observations: 1167

(Click on the following maps and charts to see full sized version) Map Help and Descriptions
Relative Density

Recency

Breeding
(direct evidence "B")

Breeding
(indirect evidence "b")

No evidence of Breeding
(transient "t")

Overwintering
(regular observations "W")

Overwintering
(at least one obs. "w")


 

(Records associated with a range of dates are excluded from time charts)



Migration
In Bozeman the spring peak in numbers was reached on May 1; the fall peak October 10 or early September (statewide). April 4 to May 25 and September 5 to November 5 is the normal migration period.

Habitat
Comments on habitat can be found in Holm 1984. In the Bozeman area, summer birds prefer the marshy borders of lakes and ponds; migrants are more widely distributed (Skaar 1969).

Ecology
At Freezeout Lake, birds nesting in grasslands are more successful (16.6%) than in all other habitat types (average of all types is 9.1%). The major cause of unsuccessful nests is skunk predation.

Reproductive Characteristics
Brood size averages 7.3 in rest-rotation grazing pastures in north-central Montana. Breeding has been recorded from mid-April to July 25. Young were observed in the Bozeman area on June 25. At Freezeout Lake hatching occurs from May 21 to July 20 (average 9.1% success rate). The average clutch size is 9.5. Hatching dates are from May 10 to July 31.

Additional Sources of Information Related to "Birds"
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Citation for data on this website:
Northern Shoveler — Anas clypeata.  Montana Field Guide.  Retrieved on February 9, 2010, from http://FieldGuide.mt.gov/detail_ABNJB10150.aspx
 
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