When do yellow-billed cuckoos arrive in Pennsylvania?
The Yellow-billed Cuckoo is a summer breeder in Pennsylvania — here is when to expect it, when it leaves, and how to be ready.
Yellow-billed Cuckoo timing in Pennsylvania
- Arrives
- Around April
- Leaves
- By September
- Status here
- Summer breeder
- Nesting season
- May–August
- Present roughly
- April–September
In Pennsylvania, yellow-billed cuckoos are present through the warm months, arriving around April and heading south again by September.
These windows are set by latitude: Pennsylvania 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
Highlighted months are when yellow-billed cuckoos are expected in Pennsylvania. 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 yellow-billed cuckoos into Pennsylvania 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 yellow-billed cuckoos eat while they're here
- Tent caterpillars, cicadas, katydids and beetles
Called the 'rain crow' for calling before storms; one of few birds that eats hairy caterpillars in bulk.
Full Yellow-billed Cuckoo diet guide → · Best feeder for yellow-billed cuckoos →
Native plants that hold yellow-billed cuckoos in Pennsylvania
Food keeps a migrant for a day; habitat keeps it for the season. These Pennsylvania-native plants are known to attract yellow-billed cuckoos:
Winter fruit.
Summer fruit and a major caterpillar host.
Acorns and insects.
Fall seed.
Fat-rich red fall fruit taken by thrushes, bluebirds and woodpeckers.
Dense evergreen roost cover and bluish 'berries' eaten through winter.
Early-summer berries arrive exactly when nestlings are being fed.
Fruit clusters persist all winter as emergency food.
Keep exploring
Frequently asked
When do yellow-billed cuckoos arrive in Pennsylvania?
yellow-billed cuckoos typically arrive in Pennsylvania around April, with nesting underway by May. Timing can shift a week or two with the weather in any given year.
When do yellow-billed cuckoos leave Pennsylvania?
Most yellow-billed cuckoos have left Pennsylvania by September. They spend the winter farther south and return the following spring.
Do yellow-billed cuckoos stay in Pennsylvania all year?
No — in Pennsylvania the Yellow-billed Cuckoo is a summer breeder, present roughly April–September. Outside that window it is rarely seen in the state.
What should I put out before yellow-billed cuckoos arrive in Pennsylvania?
Have feeders up and clean by early April — first arrivals scout reliable food sources. Good offerings for this species: tent caterpillars, cicadas, katydids and beetles.
Sources
- Yellow-billed Cuckoo — All About Birds, Cornell Lab of Ornithology
- Yellow-billed Cuckoo life history — Cornell Lab of Ornithology
- Yellow-billed Cuckoo — Audubon Guide to North American Birds
- eBird region overview and bar charts — Pennsylvania
- USDA Plant Hardiness Zone Map (2023)
- 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.