New World Warblers in Colorado
Our list for Colorado has 19 new world warblers recorded regularly there: 6 summer visitors and 13 passage migrants
Most likely in October
GBIF · OctShare of all bird records in Colorado in October, 2019–2024. Each month links to that month’s page.
All 19, most common first
Northern Yellow WarblerSetophaga aestivaSummer visitorCommon12–13 cmRegularly May–Sep
Yellow-rumped WarblerSetophaga coronataSummer visitorCommon12–15 cmRecorded all year
Orange-crowned WarblerLeiothlypis celataSummer visitorCommon11–14 cmRegularly Apr–Oct
Common YellowthroatGeothlypis trichasSummer visitorCommon11–13 cmRegularly May–Oct
Northern WaterthrushParkesia noveboracensisPassage migrantUncommon12–15 cmRegularly May–Sep
American RedstartSetophaga ruticillaSummer visitorUncommon11–14 cmRegularly May–Sep
OvenbirdSeiurus aurocapillaSummer visitorUncommon12–15 cmRegularly May–Sep
Nashville WarblerLeiothlypis ruficapillaPassage migrantRare11–13 cmRegularly Apr–Nov
Blackpoll WarblerSetophaga striataPassage migrantRare13–15 cmRegularly May–Sep
Tennessee WarblerLeiothlypis peregrinaPassage migrantRare10–13 cmRegularly May–Nov
Chestnut-sided WarblerSetophaga pensylvanicaPassage migrantRare10–14 cmRegularly May–Oct
Magnolia WarblerSetophaga magnoliaPassage migrantRare11–13 cmRegularly May–Oct
Palm WarblerSetophaga palmarumPassage migrantRare12–14 cmRegularly Apr–Dec
Black-throated Blue WarblerSetophaga caerulescensPassage migrantRare11–13 cmRegularly May–Dec
Cape May WarblerSetophaga tigrinaPassage migrantRare12–14 cmRegularly Dec–May
Black-throated Green WarblerSetophaga virensPassage migrantRare11–12 cmRegularly May–Oct
Bay-breasted WarblerSetophaga castaneaPassage migrantRare14–14 cmRegularly May–Nov
Prothonotary WarblerProtonotaria citreaPassage migrantRare13–14 cmRegularly May
Mourning WarblerGeothlypis philadelphiaPassage migrantRare10–15 cmRegularly May–Sep
Smallest to largest
Length, cm- Tennessee Warbler 10–13 cm
- Black-throated Green Warbler 11–12 cm
- Common Yellowthroat 11–13 cm
- Nashville Warbler 11–13 cm
- Chestnut-sided Warbler 10–14 cm
- Magnolia Warbler 11–13 cm
- Black-throated Blue Warbler 11–13 cm
- Northern Yellow Warbler 12–13 cm
- Orange-crowned Warbler 11–14 cm
- American Redstart 11–14 cm
- Mourning Warbler 10–15 cm
- Palm Warbler 12–14 cm
- Cape May Warbler 12–14 cm
- Yellow-rumped Warbler 12–15 cm
- Northern Waterthrush 12–15 cm
- Ovenbird 12–15 cm
- Prothonotary Warbler 13–14 cm
- Blackpoll Warbler 13–15 cm
- Bay-breasted Warbler 14–14 cm
Body length, bill to tail. Rare birds in grey.
Data: EOD – eBird Observation Dataset (Cornell Lab of Ornithology), accessed via GBIF.org, CC BY 4.0. Records from 2019–2024, aggregated and filtered by Birdfact. How these lists are made