Ruffed Grouse

The Ruffed Grouse (Bonasa umbellus) is a medium-sized, ground-dwelling bird of the grouse family, renowned for its incredible camouflage and the spectacular acoustic displays of the males. This iconic forest species spends much of its time foraging quietly on the forest floor, blending seamlessly into the leaf litter until flushed, when it bursts into the air with an explosive whir of wings.

Two distinct color morphs exist: gray and rufous (red). These variations allow the bird to adapt to different forest environments, with gray morphs more common in northern, colder coniferous-dominated zones and rufous morphs presenting more frequently in southern, deciduous climates.

Identifying a Ruffed Grouse relies on recognizing its chunky, chicken-like build, patterned plumage, and distinctive tail structure:

• Plumage Morphs: Gray-morph individuals have a gray-brown back and a distinctly gray tail, while rufous-morph individuals are warmer reddish-brown with a reddish tail. Both morphs feature intricate barring and spotting across the body.
• The Tail: The tail is long and rounded. The key field mark is a broad, dark brown or black subterminal band near the tip, bordered by pale gray or white at the very edge.
• The Ruff: It features a ruff of dark, iridescent neck feathers on the sides of the collared neck. These can be puffed out during courtship displays but are normally held flat.
• Head Crest: A small, triangular, tufted crest on the crown can be raised or lowered depending on the bird's excitement level.

Similar Species

• Spruce Grouse: Darker overall, lacking the prominent crest or the broad black subterminal tail band. Male Spruce Grouse have a bright red comb above the eye.
• Sharp-tailed Grouse: Found in open brushlands rather than thick forests; has a pointed, white-edged tail and lacks the dark neck ruff.

The Ruffed Grouse is a non-migratory resident across a vast range spanning most of Canada, Alaska, the northern United States, and extending south along the Appalachian Mountains.

Habitat Preferences

They are highly dependent on early successional forests—young, regenerating woodlands containing a mix of deciduous trees and brush.

• Aspen Stands: Quaking and bigtooth aspen are crucial, providing both high-quality cover and essential winter food in the form of buds and catkins.
• Mixed Woodlands: They thrive where dense shrubs, birch, oak, and young conifers intersect, providing shelter from predators and a diverse foraging landscape.
• Edges and Openings: Forest clearings, old overgrown pastures, and brushy fence rows are heavily utilized during spring and summer.

The Ruffed Grouse is generally solitary, quietly walking the forest floor in search of food.

The Drumming Display

The most famous behavior of the Ruffed Grouse is the male's springtime drumming. To assert dominance and attract females, a male selects a prominent 'drumming log' (usually a large, mossy downed tree). Standing securely on the log, he beats his wings rapidly against the air. The sound is not vocal; rather, it is a low-frequency acoustic boom. It begins with slow, deliberate thumps and accelerates into a rapid whir:

• Thump... thump... thump... thump-thump-thump-thr-r-r-r-r-r-r. This sound can travel a quarter-mile through dense forest vegetation.

Diet and Foraging

Ruffed Grouse are opportunistic herbivores. In spring and summer, they feed on leaves, wild berries, seeds, and occasionally insects or snails. In winter, when snow covers the ground, they transition to foraging high in trees, feeding almost exclusively on the dormant buds and catkins of aspens, birches, and cherries.

Nesting

Females construct a simple, shallow scrape on the ground, typically concealed at the base of a tree, under a log, or beneath dense brush. The nest is lined with dried leaves and pine needles. The female incubates the clutch of 9–14 eggs alone; the precocial chicks hatch fully feathered and capable of leaving the nest to forage within hours.