Quick overview: California and Alaska represent the two genuine extremes of hummingbird range in North America. California hosts the greatest overlap of resident and migratory species found anywhere in the country — Anna's Hummingbird year-round, Allen's along the coast, and Black-chinned and Costa's arriving seasonally. Alaska, by contrast, marks the literal edge of hummingbird range on the continent: only Rufous Hummingbirds regularly reach this far north, arriving as late as April and departing by August, contending with near-24-hour summer daylight unlike anywhere else these birds go. Keep feeders up year-round in coastal and southern California; in Alaska, maintain feeders only during the compressed spring-through-late-summer window when Rufous Hummingbirds are actually present.

What Makes This Region Different

No other pairing in this series captures such a genuine contrast. California is the most hummingbird-rich state in terms of resident-migrant overlap in the entire country — multiple species coexist here across different seasons in a way no other single state matches. Alaska is the opposite extreme entirely: the Cornell Lab of Ornithology confirms the Rufous Hummingbird "breeds as far north as southeastern Alaska — the northernmost breeding range of any hummingbird in the world," a fact independently corroborated by the Alaska Department of Fish and Game and the U.S. Fish & Wildlife Service. Alaska's Rufous population hosts essentially one species that has to contend with conditions — near-24-hour summer daylight, a dramatically compressed breeding season — unlike anything faced by hummingbirds anywhere else in North America.

The Hummingbirds You'll See in California

Anna's Hummingbird is California's year-round resident species, present throughout most of the state in every season, including winter. Males show an iridescent rose-red crown and throat.

Allen's Hummingbird is found along coastal California, with some populations migratory and others — particularly around the Los Angeles basin and Channel Islands — increasingly resident year-round. Males have a coppery-orange body and throat.

Black-chinned Hummingbird is a common spring-through-fall migrant across much of inland and southern California, arriving as temperatures warm and departing in fall.

Costa's Hummingbird is a desert specialist found in southeastern California, particularly active in the cooler months when desert blooms peak.

Rufous Hummingbird and, more rarely, Calliope Hummingbird pass through California during migration, particularly in mountain and northern areas, without breeding there in significant numbers.

The Hummingbird You'll See in Alaska

Rufous Hummingbird is essentially the only species that regularly reaches Alaska, arriving in the southeastern panhandle and coastal areas as early as April and pushing north as the season progresses. According to the Western Hummingbird Partnership, it's the most common and widespread hummingbird species in Alaska, found in a wide variety of habitats, with populations reaching as far as Prince William Sound. Males are bright orange-red and unmistakable. This represents the absolute northern limit of hummingbird range anywhere on the continent — a fact confirmed independently by Cornell Lab of Ornithology, the Alaska Department of Fish and Game, and Encyclopedia Britannica.

Migration Timing by Sub-Region

Pop's tip: If you're in Alaska, your entire hummingbird season is compressed into a few months — put your feeder up in early April to be ready for the first arrivals, since the window here is far shorter than almost anywhere else covered in this series.

Where They're Coming From, and Where They're Headed

California's resident and migratory species overlap in complex ways shaped by the state's enormous range of climates, from desert to coastal to mountain habitats — a bird wintering in the Central Valley may be a true year-round Anna's resident, while a Black-chinned Hummingbird passing through the same area is partway through a much longer journey to or from Mexico.

Rufous Hummingbirds reaching Alaska have completed one of the most remarkable journeys of any North American bird. Birds of the World (Cornell Lab) notes this species reaches the northernmost latitude of any hummingbird at 61°N, after completing what is, measured in body lengths, the longest known avian migration — traveling from wintering grounds in Mexico, up the Pacific Coast, and continuing farther north than any other hummingbird species travels anywhere on the continent. Their return trip in mid-to-late summer takes a different, more interior route south through the Rockies and Mountain West, part of the same clockwise loop migration pattern described in that region's guide.

How We Know This

Species range, arrival, and departure timing referenced in this guide draw on data compiled by the Cornell Lab of Ornithology's All About Birds and eBird platforms, which aggregate millions of citizen-reported sightings to map real-time migration patterns. The mechanism behind migration timing itself — driven by day length and hormonal changes rather than food or temperature — is confirmed by researchers at the National Audubon Society. Rufous Hummingbird's status as the northernmost-ranging hummingbird species on Earth is independently confirmed by the Alaska Department of Fish and Game, the U.S. Fish & Wildlife Service, and Encyclopedia Britannica, with additional habitat and timing detail from the Western Hummingbird Partnership.

Should I Take My Feeder Down in Fall?

In California, the answer depends heavily on where in the state you are: in areas with resident Anna's or Allen's Hummingbirds, feeders can reasonably stay up year-round, following the same logic as the Pacific Northwest. In Alaska, the situation is different — since Rufous Hummingbirds are genuinely absent for most of the year here, there's little reason to maintain a feeder outside the April-through-August window when birds are actually present.

Practical recommendation: in coastal and southern California, treat feeders as a year-round fixture. In Alaska, put feeders up in early April and take them down by early September, since the species present there simply isn't around outside that window.

How to Help Hummingbirds Through This Region

In California:

• Keep feeders up year-round in areas with resident Anna's or Allen's populations
• Account for California's genuine climate diversity — desert, coastal, and mountain areas within the state can have meaningfully different timing
• Plant native, nectar-rich flowers suited to your specific California microclimate, since the state's range of conditions is unusually wide

In Alaska:

• Put feeders up in early April to be ready for the first Rufous Hummingbird arrivals
• Take feeders down by early September, once birds have moved on for the season
• Recognize that Alaska's compressed season means less margin for error on timing compared to almost anywhere else in this series
• Be mindful that near-24-hour summer daylight can affect feeding patterns, with birds potentially feeding across a much longer daily window than in more southern latitudes

Frequently Asked Questions

Why does California have so many hummingbird species compared to other states? California's enormous range of climates — desert, coastal, mountain, and Central Valley habitats all within one state — supports both resident species like Anna's and Allen's Hummingbirds and multiple migratory species passing through or breeding seasonally, creating more overlap than almost anywhere else in the country.

What is the only hummingbird species found in Alaska? Rufous Hummingbird is essentially the only species that regularly reaches Alaska, confirmed by the Cornell Lab of Ornithology and Alaska Department of Fish and Game as representing the absolute northern limit of hummingbird range anywhere on the North American continent.

When should I put my hummingbird feeder out in Alaska? Early April, to be ready for the first Rufous Hummingbird arrivals in the southeastern panhandle, with birds continuing to arrive into May farther north and inland.

Does Alaska's long summer daylight affect hummingbird behavior? It can. With near-24-hour daylight during peak summer, Rufous Hummingbirds in Alaska may feed across a longer daily window than hummingbirds do at more southern latitudes, though detailed research on this specific effect is still limited.

Should I keep my feeder up year-round in California? In areas with resident Anna's or Allen's Hummingbird populations, yes — many California birders maintain feeders continuously. In areas that see only seasonal migrants, a more traditional spring-through-fall schedule is appropriate.

Summary: Key Takeaways for Hummingbird Migration in California & Alaska

• California and Alaska represent opposite extremes: the highest species overlap in the country versus the single northernmost edge of hummingbird range
• Anna's and Allen's Hummingbirds are resident species in much of California, supporting year-round feeders in many areas
• Rufous Hummingbird is essentially the only species reaching Alaska, confirmed by multiple sources as the northernmost-breeding hummingbird species in the world, arriving as early as April and departing by August
• Alaska's hummingbird season is genuinely compressed compared to the rest of the country — put feeders up in early April and take them down by early September
• California's internal climate diversity means timing can vary meaningfully even within the state, depending on desert, coastal, or mountain conditions
• Range and timing data referenced throughout draw on Cornell Lab of Ornithology (eBird, All About Birds, Birds of the World), National Audubon Society, Alaska Department of Fish and Game, U.S. Fish & Wildlife Service, and the Western Hummingbird Partnership

At Pop's Birding, we believe every backyard — big or small — has room for a little more wonder. Explore our feeders, nectars, swings, and wildflower seed blends to start building your own hummingbird sanctuary today.