Migration timing

When do scarlet tanagers arrive in Delaware?

The Scarlet Tanager is a summer breeder in Delaware — here is when to expect it, when it leaves, and how to be ready.

Scarlet Tanager, verified photograph
Photo: Wikimedia Commons

Scarlet Tanager timing in Delaware

Arrives
Around April
Leaves
By August
Status here
Summer breeder
Nesting season
May–July
Present roughly
April–August

In Delaware, scarlet tanagers are present through the warm months, arriving around April and heading south again by August.

These windows are set by latitude: Delaware sits in the middle part of this species' range, so timing here tracks the continental average closely. In any given year, weather can move the first arrivals by a week or two either way.

Month by month in this state

Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Highlighted months are when scarlet tanagers are expected in Delaware. The edges of the window are the interesting weeks — first arrivals and last departures vary most from year to year.

Getting ready before they arrive

The week before April is the time to act. Have feeders cleaned, filled and out by early April — the first scarlet tanagers into Delaware are scouting for reliable food, and a station that's ready early gets added to their route.

Once nesting begins around May, adults switch to protein-rich food for their young and visits to feeders become quick and purposeful. Expect the busiest activity at dawn.

What scarlet tanagers eat while they're here

  • Caterpillars, beetles, wasps and moths

A treetop bird that drops to birdbaths and jelly feeders during spring migration, especially after storms.

Full Scarlet Tanager diet guide → · Best feeder for scarlet tanagers →

Native plants that hold scarlet tanagers in Delaware

Food keeps a migrant for a day; habitat keeps it for the season. These Delaware-native plants are known to attract scarlet tanagers:

Flowering dogwood
Cornus florida · Tree

Fat-rich red fall fruit taken by thrushes, bluebirds and woodpeckers.

Eastern red cedar
Juniperus virginiana · Tree

Dense evergreen roost cover and bluish 'berries' eaten through winter.

Serviceberry
Amelanchier arborea · Tree

Early-summer berries arrive exactly when nestlings are being fed.

Winterberry
Ilex verticillata · Shrub

Deciduous holly holding red fruit into mid-winter.

Staghorn sumac
Rhus typhina · Shrub

Fruit clusters persist all winter as emergency food.

Smooth sumac
Rhus glabra · Shrub

Red fruit heads hang on through winter.

White oak
Quercus alba · Tree

Acorns plus hundreds of caterpillar species for nestling food.

Black cherry
Prunus serotina · Tree

Summer fruit and one of the top caterpillar host trees.

Keep exploring

Frequently asked

When do scarlet tanagers arrive in Delaware?

scarlet tanagers typically arrive in Delaware around April, with nesting underway by May. Timing can shift a week or two with the weather in any given year.

When do scarlet tanagers leave Delaware?

Most scarlet tanagers have left Delaware by August. They spend the winter farther south and return the following spring.

Do scarlet tanagers stay in Delaware all year?

No — in Delaware the Scarlet Tanager is a summer breeder, present roughly April–August. Outside that window it is rarely seen in the state.

What should I put out before scarlet tanagers arrive in Delaware?

Have feeders up and clean by early April — first arrivals scout reliable food sources. Good offerings for this species: caterpillars, beetles, wasps and moths.

Sources

  1. Scarlet Tanager — All About Birds, Cornell Lab of Ornithology
  2. Scarlet Tanager life history — Cornell Lab of Ornithology
  3. Scarlet Tanager — Audubon Guide to North American Birds
  4. eBird region overview and bar charts — Delaware
  5. USDA Plant Hardiness Zone Map (2023)
  6. Audubon Native Plants Database

Timing reflects typical patterns for the region as a whole; local dates vary with elevation and year. Check the linked eBird bar charts for your county.