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In Hand Ageing and Sexing Techniques: Adrienne J. Leppold and Robert S. Mulvihill Molt Pattern Shortcuts and Summaries.

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Presentation on theme: "In Hand Ageing and Sexing Techniques: Adrienne J. Leppold and Robert S. Mulvihill Molt Pattern Shortcuts and Summaries."— Presentation transcript:

1 In Hand Ageing and Sexing Techniques: Adrienne J. Leppold and Robert S. Mulvihill Molt Pattern Shortcuts and Summaries

2 North American Bird Bander Vol. 18 No. 1

3

4 Summaries of Molt Patterns for Passerines (and some near passerines) - Know Where to Look Consistencies within genera and families of birds - Ageing shortcuts

5 CC/A1 Molt LimitsParulids Black-throated Blue Warbler

6 CC/A1 Molt Limits Parulids Northern Parula Cerulean Warbler

7 CC/A1 Molt Limits Parulids American Redstart

8 CC/A1 Molt Limits Vireos

9 Exceptions to the Rule (for CC/A1 moltlimits) Common Yellowthroats and White-eyed Vireos can often have a more extensive molt including outer PP and inner SS.

10 CC/A1 Molt Limits Emberizids + tertials

11 CC/A1 Molt Limits + tertials

12 CC/A1 Molt Limits Spizella and Melospiza Sparrows + tertials (and sometimes more)

13 GC Molt Limit Turdid and Mimid Families Gray-cheeked Thrush

14 GC Molt Limit Turdid and Mimid Families Swainson’s Thrush

15 GC Molt Limit Turdid and Mimid Families Gray Catbird

16 GC Molt Limit Turdid and Mimid Families Eastern Bluebird

17 GC Molt Limit Turdid and Mimid Families American Robin

18 Often an extensive molt including all GC, CC, alula, tertials, additional inner secondaries and outer primaries Cardinalids

19 Often an extensive molt including all GC, CC, alula, tertials, additional inner secondaries and outer primaries Indigo Bunting

20 Complete or nearly complete molt IcteridsNorthern CardinalSwallows Presence of molt limit = HY/SY Absence of molt limit = U/AHY

21 Complete or nearly complete molt Icterids can retain underwing coverts

22 Complete or nearly complete molt Icterids can retain underwing coverts Brown-headed Cowbird

23 Molt restricted to LC/MC = Difficult to age Kinglets

24 A few “Tricks of the Trade”

25 American Goldfinch

26 A few “Tricks of the Trade” Swamp Sparrow

27 A few “Tricks of the Trade” Black-and-White Warbler

28 Swainson’s Thrush


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