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Very Large Brown Shorebirds.
- Published in:
- Colorado Birds, 2021, v. 55, n. 2, p. 100
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- Article
In the Scope: Brown Ducks.
- Published in:
- Colorado Birds, 2021, v. 55, n. 1, p. 30
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- Article
Heavily-marked Male Brewer’s Blackbirds.
- Published in:
- Colorado Birds, 2020, v. 54, n. 4, p. 146
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- Publication type:
- Article
The 77th Report of the Colorado Bird Records Committee.
- Published in:
- Colorado Birds, 2020, v. 54, n. 4, p. 158
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- Article
Distinguishing Greater and Lesser Yellowlegs.
- Published in:
- Colorado Birds, 2020, v. 54, n. 3, p. 119
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- Publication type:
- Article
The Problem of Juvenile and Immature Barn Swallows.
- Published in:
- Colorado Birds, 2020, v. 54, n. 2, p. 60
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- Publication type:
- Article
In the Scope: Molt in Ducks and Why Birders Should Care.
- Published in:
- Colorado Birds, 2020, v. 54, n. 1, p. 24
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- Publication type:
- Article
Spotted and Solitary sandpipers and a review of this column’s history.
- Published in:
- Colorado Birds, 2019, v. 53, n. 4, p. 186
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- Publication type:
- Article
Meet Colorado’s Odd Duck: White-rumped Sandpiper.
- Published in:
- Colorado Birds, 2019, v. 53, n. 3, p. 114
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- Publication type:
- Article
Seasonal timing: Sparrows.
- Published in:
- Colorado Birds, 2019, v. 53, n. 2, p. 84
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- Article
Non-adult Plumages: Terminology Matters.
- Published in:
- Colorado Birds, 2018, v. 52/53, n. 4/1, p. 23
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- Article
Hybridization Among Aechmophorus Grebes and Implications for Identification.
- Published in:
- Colorado Birds, 2018, v. 52, n. 3, p. 132
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- Publication type:
- Article
In the Scope: Mergansers: Identification, ageing, and sexing.
- Published in:
- Colorado Birds, 2018, v. 52, n. 2, p. 92
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- Publication type:
- Article
Eurasian Collared-Dove in Colorado.
- Published in:
- Colorado Birds, 2017, v. 51/52, n. 4/1, p. 35
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- Publication type:
- Article
Northern Flicker ID: A Caution about Intergrades, Part I.
- Published in:
- Colorado Birds, 2017, v. 51/52, n. 4/1, p. 52
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- Article
Selected Bird Subspecies of Interest in Colorado: Part 1.
- Published in:
- Colorado Birds, 2017, v. 51, n. 3, p. 154
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- Publication type:
- Article
"Green-winged" Teal, the Answers.
- Published in:
- Colorado Birds, 2017, v. 51, n. 2, p. 91
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- Article
'Green-winged' Teal.
- Published in:
- Colorado Birds, 2017, v. 51, n. 1, p. 51
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- Publication type:
- Article
White-winged Junco in Colorado.
- Published in:
- Colorado Birds, 2016, v. 50, n. 4, p. 240
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- Publication type:
- Article
Yellow-rumped Warblers: An Under-Appreciated Field Identification Problem.
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- 2016
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- Publication type:
- Essay
Lesser Nighthawk: Identification Pitfalls.
- Published in:
- Colorado Birds, 2016, v. 50, n. 2, p. 105
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- Publication type:
- Article
Colorado's Bird List, Decadal Species Accumulation, and Comments on the State's 500th Species.
- Published in:
- 2016
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- Publication type:
- Essay
Lesser Nighthawk in Colorado.
- Published in:
- 2016
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- Publication type:
- Essay
Sharpie vs. Coop, Part I: In Flight.
- Published in:
- Colorado Birds, 2016, v. 50, n. 1, p. 319
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- Article
Ravens in Colorado: An Impossible Field Identification?
- Published in:
- Colorado Birds, 2015, v. 49, n. 4, p. 255
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- Publication type:
- Article
Soft Parts: Leg Color in Passerines.
- Published in:
- Colorado Birds, 2015, v. 49, n. 3, p. 117
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- Publication type:
- Article
Soft Parts: Femal Dabbling Ducks, the Answers.
- Published in:
- Colorado Birds, 2015, v. 49, n. 2, p. 92
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- Article
Soft Parts: Female Dabbling Ducks.
- Published in:
- Colorado Birds, 2015, v. 49, n. 1, p. 40
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- Article
Identifying Curve-billed Thrasher Subspecies: Why and How.
- Published in:
- Colorado Birds, 2014, v. 48, n. 4, p. 296
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- Publication type:
- Article
Seasonal Timing: Small, Green Flycatchers.
- Published in:
- Colorado Birds, 2014, v. 48, n. 3, p. 249
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- Publication type:
- Article
Juveniles of Broad-winged and Red-shouldered Hawks: Throat color.
- Published in:
- 2014
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- Publication type:
- Essay
Warm-colored Mountain Bluebirds: An unappreciated identification pitfall.
- Published in:
- Colorado Birds, 2013, v. 47, n. 4, p. 297
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- Publication type:
- Article
Juvenal Plumage in Colorado Birds.
- Published in:
- 2013
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- Publication type:
- Essay
Russet-backed Thrush in Colorado.
- Published in:
- Colorado Birds, 2013, v. 47, n. 2, p. 135
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- Publication type:
- Article
Plumage Progression in Male Northern Shovelers.
- Published in:
- Colorado Birds, 2013, v. 47, n. 1, p. 58
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- Publication type:
- Article
The Mexican Duck in Colorado: Identification and Occurrence.
- Published in:
- Colorado Birds, 2012, v. 46, n. 4, p. 296
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- Publication type:
- Article
Goldeneye Bill Coloration.
- Published in:
- 2012
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- Publication type:
- Essay
Scapular and Tertial Crescents.
- Published in:
- Colorado Birds, 2012, v. 46, n. 1, p. 78
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- Publication type:
- Article
Downy and Hairy Woodpeckers in Colorado.
- Published in:
- 2011
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- Publication type:
- Essay
Cave Swallow: Colorado's Stealthiest Vagrant.
- Published in:
- Colorado Birds, 2011, v. 45, n. 3, p. 236
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- Publication type:
- Article
Spring Plumage Change in Passerines: Prealternate Molt vs. Wear.
- Published in:
- Colorado Birds, 2011, v. 45, n. 2, p. 154
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- Publication type:
- Article
Greater and Lesser Scaup: Beyond Crown Shape.
- Published in:
- Colorado Birds, 2011, v. 45, n. 1, p. 75
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- Publication type:
- Article
Pacific and Winter Wrens.
- Published in:
- Colorado Birds, 2010, v. 44, n. 4, p. 281
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- Article
Identifying Solitary Sandpiper Subspecies: Why and How.
- Published in:
- Colorado Birds, 2010, v. 44, n. 3, p. 203
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- Publication type:
- Article
Molt and Plumage: A Primer.
- Published in:
- 2010
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- Publication type:
- Essay
Eastern and Western Marsh Wrens.
- Published in:
- Colorado Birds, 2010, v. 44, n. 1, p. 61
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- Publication type:
- Article
Horned Grebe vs. Eared Grebe: Head shape and occurrence timing.
- Published in:
- Colorado Birds, 2009, v. 43, n. 4, p. 306
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- Publication type:
- Article
Lilian's Meadowlark: A Cryptic Species (?) and a Rare Colorado Breeder.
- Published in:
- Colorado Birds, 2009, v. 43, n. 3, p. 222
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- Article
Juvenile Horned Lark.
- Published in:
- Colorado Birds, 2009, v. 43, n. 2, p. 152
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- Publication type:
- Article
Brown-capped Rosy-Finch: Beware of Gray-crowned-like Males.
- Published in:
- Colorado Birds, 2009, v. 43, n. 1, p. 79
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- Publication type:
- Article