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Fun Facts
Did You Know?
The puffing behavior is the bufflehead's most theatrical feature and its primary courtship tool. A displaying male inflates the head feathers until the head appears roughly twice its resting size, bobs rapidly, and turns to show the iridescent face at different angles to the female. The iridescence shifts through green, purple, and bronze depending on the light angle, which makes the display look like a disco ball attached to a very small, very motivated duck that has decided this particular female needs to appreciate what she is seeing
If This Animal Could Talk...
"Watch closely, respect my space, and let my habitat explain the rest of the story."
The bufflehead (Bucephala albeola) is the smallest sea duck in North America — rivaling the green-winged teal for smallest American duck overall, averaging about 13 ounces and 14 inches — and it looks like someone gave a sparrow a tuxedo and an oversized head and sent it out.
The name is The name is a contraction of "buffalo head," referring to the male's ability to puff his head feathers until the already-large head becomes genuinely enormous — a visual effect that is more dramatic in the field than photographs usually convey.
A Few More Facts
How they hunt and forage: Aquatic invertebrates — insects in freshwater, crustaceans and mollusks in saltwater. They dive continuously, spending roughly 60 percent of their active time foraging underwater, with the high metabolic rate of a very small bird requiring nearly continuous input. The dives are to depths of about four to fifteen feet, short by diving duck standards, and the bird surfaces quickly and goes back down with the rhythm of an animal that cannot afford to stop. In winter on Louisiana's inland lakes and reservoirs, the diet is aquatic invertebrates in the substrate — freshwater shrimp, small clams, insect larvae. The bird is too small to handle the prey a canvasback works through without effort, which means the bufflehead and the canvasback are not really in competition for food even when they share a water body — they are eating at different size scales from the same habitat.
Live birth or eggs? no
When young are born: See the detailed species sections below.
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What Is the Bufflehead Often Confused With?
The bufflehead (Bucephala albeola) is the smallest sea duck in North America — rivaling the green-winged teal for smallest American duck overall, averaging about 13 ounces and 14 inches — and it looks like someone gave a sparrow a tuxedo and an oversized head and sent it out. The name is The name is a contraction of "buffalo head," referring to the male's ability to puff his head feathers until the already-large head becomes genuinely enormous — a visual effect that is more dramatic in the field than photographs usually convey. The field guides describe this neutrally.
Drag the handle left and right to compare Bufflehead side by side with the species it gets mistaken for most.
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Bufflehead vs. American Wigeon
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Accessibility
Accessibility
The bufflehead's small size and often close-approach behavior make it more accessible for direct observation than the larger diving ducks that stay well offshore on open reservoirs. Groups working the margins of a lake or pond will often tolerate closer approach than scaup, and the diving behavior — continuous, rapid, with birds surfacing and diving in predictable rhythms — gives observers time to study the bird between dives.
For accessibility in the mobility sense: buffleheads use shoreline margins and cove areas that are often visible from paved or gravel access roads, boat ramps, and fishing piers. A spotting scope is not required the way it is for mid-reservoir scaup. Binoculars at 8x bring the iridescence into range at comfortable distances on calm water, and the head display, when it happens, is visible enough that you will not miss it.
The sentinel behavior — one bird on the surface while others dive — means there is almost always a bird visible and stationary long enough to study. The group does not all disappear simultaneously, which makes continuous observation much easier than with species that dive in unison and leave you looking at an empty surface wondering where they went.
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Frequently Asked Questions
Does Bufflehead live in North Louisiana?
Yes. No other small diving duck hen in North Louisiana has that specific combination. The display happens in winter and early spring in North Louisiana, which means you can watch it on a December or January reservoir if the birds are paired or pairing, which they often are by the time they arrive on the wintering grounds. The closest confusion species in North Louisiana is the female hooded merganser — similar in size, similar in the dark-head-with-lighter-face arrangement.
How do you identify Bufflehead?
The bufflehead (Bucephala albeola) is the smallest sea duck in North America — rivaling the green-winged teal for smallest American duck overall, averaging about 13 ounces and 14 inches — and it looks like someone gave a sparrow a tuxedo and an oversized head and sent it out. The name is The name is a contraction of "buffalo head," referring to the male's ability to puff his head feathers until the already-large head becomes genuinely enormous — a visual effect that is more dramatic in the field than photographs usually convey. The field guides describe this neutrally.
What does Bufflehead eat?
What They Eat and How They Dive
Aquatic invertebrates — insects in freshwater, crustaceans and mollusks in saltwater. They dive continuously, spending roughly 60 percent of their active time foraging underwater, with the high metabolic rate of a very small bird requiring nearly continuous input. The dives are to depths of about four to fifteen feet, short by diving duck standards, and the bird surfaces quickly and goes back down with the rhythm of an animal that cannot afford to stop.
In winter on Louisiana's inland lakes and reservoirs, the diet is aquatic invertebrates in the substrate — freshwater shrimp, small clams, insect larvae. The bird is too small to handle the prey a canvasback works through without effort, which means the bufflehead and the canvasback are not really in competition for food even when they share a water body — they are eating at different size scales from the same habitat.
They dive, surface, shake off, and dive again. The small size means more dives per hour than the larger diving ducks, which makes a group of buffleheads on water one of the more kinetic things to watch — the surface is constantly breaking with departing and returning birds, never still.
One bird always stays up as a sentinel while others dive.
Not always the same bird, not a formal arrangement — at any given moment in a group of foraging buffleheads, there is a bird on the surface watching. When the sentinel dives, another bird has typically already surfaced to take over the watch. Whether this is coordination or just the statistical result of diving rotation timing is not settled. The outcome either way is that a group of buffleheads is almost never entirely underwater at the same time, which is either sophisticated collective security or a coincidence that works the same way.
Is Bufflehead dangerous to people?
No. This species is not dangerous to people when it is observed without handling or disturbance
