Cassin's Finch in September

September is the peak of fall migration. Huge numbers of birds move south on cold fronts, mixed flocks form, and summer residents slip away almost unnoticed. Young birds making their first migration appear in places the species rarely visits.

For the Cassin's Finch specifically, September is a fall month of relative routine, with the species settled into its seasonal pattern across its range. Across the 12 states and provinces where Cassin's finches occur, what the bird is doing this month depends heavily on latitude — the details below break it down by band.

Southern states

absent

Mid-latitudes

year-round resident

Northern states & Canada

absent

In September, Cassin's finches are absent in the South, year-round resident across the mid-latitudes, and absent in the northern states and Canada. That north–south split is the defining feature of this month: where you live changes which version of this bird you're looking at.

Cassin's finches are not nesting in September. The season runs May–July at mid-latitudes.

Outside the nesting season, Cassin's finches put their energy into feeding and flocking rather than territory and young — which is exactly what makes them easier to watch and attract this month.

• Conifer seeds and buds

Mountain finch that descends to foothill feeders in winter.

Migrants passing through may stop at feeders for a day and never return — September rewards watching closely. Natural seed and fruit crops are abundant, so feeder traffic can be uneven.

Full Cassin's Finch diet guide → · Best feeder for Cassin's finches →

Cassin's finches are settled and predictable in September, which makes this a good month to learn the bird's routine — same feeders, same perches, same times of day.

The state guides below show exactly where in your region Cassin's finches are expected this month and which native plants hold them in a yard.

ArizonaBritish ColumbiaCaliforniaColoradoIdahoMontanaNevadaNew MexicoOregonUtahWashingtonWyoming