When do hooded mergansers arrive in New Mexico?
The Hooded Merganser is a winter visitor in New Mexico — here is when to expect it, when it leaves, and how to be ready.
Hooded Merganser timing in New Mexico
- Arrives
- Around October
- Leaves
- By March
- Status here
- Winter visitor
- Present roughly
- October–March
In New Mexico, hooded mergansers are a cold-season bird, arriving around October and heading back north to breed by March.
These windows are set by latitude: New Mexico 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 hooded mergansers are expected in New Mexico. 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 October is the time to act. Have feeders cleaned, filled and out by early October — the first hooded mergansers into New Mexico are scouting for reliable food, and a station that's ready early gets added to their route.
Through the winter, consistent food matters more than variety — birds map dependable stations into their daily routes and rely on them hardest during cold snaps.
What hooded mergansers eat while they're here
- Small fish in ice-free water
Nests in tree cavities and wood-duck-style boxes near quiet wooded ponds and slow rivers.
Full Hooded Merganser diet guide → · Best feeder for hooded mergansers →
Native plants that hold hooded mergansers in New Mexico
Food keeps a migrant for a day; habitat keeps it for the season. These New Mexico-native plants are known to attract hooded mergansers:
Summer fruit and one of the top caterpillar host trees.
Late-summer berry clusters taken by over 40 bird species.
Insect-rich in fall and seed in winter.
Dark summer fruit and heavy caterpillar load.
Seeds and bark insects; pygmy nuthatch and woodpecker habitat.
Acorns for jays and woodpeckers across the southern Rockies.
Late-season bloom supports insects; seed for sparrows.
Thorny cover with orange fruit favored by thrashers and cardinals.
Keep exploring
Frequently asked
When do hooded mergansers arrive in New Mexico?
hooded mergansers typically arrive in New Mexico around October. Timing can shift a week or two with the weather in any given year.
When do hooded mergansers leave New Mexico?
Most hooded mergansers have left New Mexico by March. They spend the breeding season farther north and return in the fall.
Do hooded mergansers stay in New Mexico all year?
No — in New Mexico the Hooded Merganser is a winter visitor, present roughly October–March. Outside that window it is rarely seen in the state.
What should I put out before hooded mergansers arrive in New Mexico?
Have feeders up and clean by early October — first arrivals scout reliable food sources. Good offerings for this species: minnows, crayfish and aquatic insects.
Sources
- Hooded Merganser — All About Birds, Cornell Lab of Ornithology
- Hooded Merganser life history — Cornell Lab of Ornithology
- Hooded Merganser — Audubon Guide to North American Birds
- NestWatch nest box plans and species requirements — Cornell Lab
- eBird region overview and bar charts — New Mexico
- 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.