When do goldfinches leave Delaware?

American Goldfinches never fully leave Delaware: numbers fall back below half their usual rate by mid September, but some are still reported in every week, about 17% of checklists at the low.

When is the best time to see goldfinches in Delaware?

The American Goldfinch is reported most often in mid August, on about 50% of Delaware checklists.

American Goldfinch · Spinus tristis

When Do Goldfinches Arrive in Delaware?

Photo: Andy Wilson, CC0 1.0 via iNaturalist

American Goldfinches are in Delaware all year, but most are here in summer: numbers build from the second week of April, peak in mid August (50% of checklists), and fall back by mid September. In the quietest week (early January) they are still on about 17% of checklists. They are the only regular goldfinches in Delaware.

When to look

Numbers buildApr 8-14the second week of April

PeakAug 15-21mid August

Fall back bySep 15-21mid September

FewestJan 1-7early January

Best: mid August. Here all year; numbers build from the second week of April and fall back by mid September. Peak: on about 50% of Delaware checklists.

Januncommon
Febuncommon
Marcommon
Aprpeak season
Maypeak season
Junpeak season
Julpeak season
Augpeak season
Seppeak season
Octcommon
Novcommon
Deccommon

Darker months: more checklists report it. Outlined: peak month.

Goldfinches in Delaware, species by species

Species	First arrivals	Common by	Peak	Most gone by	Peak %
American Goldfinch	Apr 8-14	Apr 8-14	Aug 15-21	Sep 15-21	50%

American Goldfinch

Share of complete checklists reporting each species, by week (4 per month). Gaps: fewer than 10 checklists that week.

Frequency is the share of complete checklists in Delaware that listed the bird, 2016–2025. It is not a head count, and it follows where and when people go birding. How to read it.

Where in Delaware

Best counties for American Goldfinch

Share of checklists at the peak

New Castle CountyBest mid August · 1045 checklists that week, 72,140 in all69%
Kent CountyBest early August · 778 checklists that week, 36,693 in all50%
Sussex CountyBest early August · 1800 checklists that week, 91,027 in all41%

Common questions

When do goldfinches arrive in Delaware?: American Goldfinches are in Delaware all year, but most are here in summer: numbers build from the second week of April, peak in mid August (50% of checklists), and fall back by mid September. In the quietest week (early January) they are still on about 17% of checklists. They are the only regular goldfinches in Delaware.
When do goldfinches leave Delaware?: American Goldfinches never fully leave Delaware: numbers fall back below half their usual rate by mid September, but some are still reported in every week, about 17% of checklists at the low.
When is the best time to see goldfinches in Delaware?: The American Goldfinch is reported most often in mid August, on about 50% of Delaware checklists.