When do wrens leave Delaware?

The Carolina Wren does not leave Delaware: it is reported all year, from 33% of checklists in mid January to 58% in late September.

When is the best time to see wrens in Delaware?

The Carolina Wren is reported most often in late September, on about 58% of Delaware checklists.

Which wrens are in Delaware?

Carolina Wren, Northern House Wren, Marsh Wren, and Winter Wren are reported regularly; the Carolina Wren is the most common.

4 wren species in Delaware

When Do Wrens Arrive in Delaware?

Photo: northerly, CC BY 4.0 via iNaturalist

Carolina Wrens, Northern House Wrens, and Marsh Wrens are the wrens you are most likely to see in Delaware. The Carolina Wren is in Delaware all year. It turns up on about 58% of checklists at its peak (late September) and on 33% in its quietest week (mid January).

When to look

PresentAll year

Peak weekSep 22-30late September

Quietest weekJan 15-21mid January

Best: late September. Here all year. Peak: on about 58% of Delaware checklists.

Jancommon
Febcommon
Marpeak season
Aprpeak season
Maypeak season
Junpeak season
Julpeak season
Augpeak season
Seppeak season
Octpeak season
Novpeak season
Decpeak season

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

Wrens in Delaware, species by species

Species	First arrivals	Common by	Peak	Most gone by	Peak %
Carolina Wren	all year	–	Sep 22-30	–	58%
Northern House Wren	Apr 8-14	Apr 15-21	May 8-14	Oct 1-7	29%
Marsh Wren	Apr 8-14	Apr 22-30	Jul 15-21	Aug 8-14	20%
Winter Wren	Oct 1-7	Oct 8-14	Dec 8-14	Mar 22-31	6.6%

Carolina Wren
Northern House Wren
Marsh Wren
Winter Wren

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 Carolina Wren

Share of checklists at the peak

New Castle CountyBest the second week of September · 1426 checklists that week, 72,140 in all72%
Sussex CountyBest early October · 1542 checklists that week, 91,027 in all51%
Kent CountyBest late September · 734 checklists that week, 36,693 in all46%

All wrens in Delaware

4 species are reported regularly: 1 stay all year, 2 are summer visitors, and 1 are winter visitors.

#	Species	Pattern	First arrivals	Peak	Peak %
1	Carolina Wren	Year-round	all year	Sep 22-30	58%
2	Northern House Wren	Summer visitor	Apr 8-14	May 8-14	29%
3	Marsh Wren	Summer visitor	Apr 8-14	Jul 15-21	20%
4	Winter Wren	Winter visitor	Oct 1-7	Dec 8-14	6.6%

Common questions

When do wrens arrive in Delaware?: The Carolina Wren is in Delaware all year. It turns up on about 58% of checklists at its peak (late September) and on 33% in its quietest week (mid January).
When do wrens leave Delaware?: The Carolina Wren does not leave Delaware: it is reported all year, from 33% of checklists in mid January to 58% in late September.
When is the best time to see wrens in Delaware?: The Carolina Wren is reported most often in late September, on about 58% of Delaware checklists.
Which wrens are in Delaware?: Carolina Wren, Northern House Wren, Marsh Wren, and Winter Wren are reported regularly; the Carolina Wren is the most common.