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  • American crows (Corvus brachyrhynchos) have largely replaced leaves on three winter trees near North Creek in Bothell, Washington. American crows spend most of the day in small groups of between 5 and 15 birds. As the sun sets, however, thousands of crows gather in staging areas before traveling to their roost in the city, which is home to more than 10,000 crows.
    Crows_Three-Trees_Sunset_North-Creek...jpg
  • Thousands of American crows (Corvus brachyrhynchos) approach their nightly roosting location in Bothell, Washington. An estimated 16,000 crows use the roost each night in the fall and winter months. A long camera exposure captures the motion of the crows as they approach the roost.
    Crows_Approaching-Roost_Long-Exposur...jpg
  • Thousands of American crows (Corvus brachyrhynchos) approach their nightly roosting location in Bothell, Washington. An estimated 16,000 crows use the roost each night in the fall and winter months. A long camera exposure captures the motion of the crows as they approach the roost.
    Crows_Murder_Sky-Full_Motion_Bothell...jpg
  • Thousands of American crows (Corvus brachyrhynchos) approach their nightly roosting location in Bothell, Washington. An estimated 16,000 crows use the roost each night in the fall and winter months. A long camera exposure captures the motion of the crows as they approach the roost.
    Crows_Approaching-Roost_Long-Exposur...jpg
  • Thousands of American crows (Corvus brachyrhynchos) approach their nightly roosting location in Bothell, Washington. An estimated 15,000 crows use the roost each night in the fall and winter months. A long camera exposure captures the motion of the crows as they approach the roost.
    Crows_Approaching-Roost_Long-Exposur...jpg
  • Thousands of American crows (Corvus brachyrhynchos) approach their nightly roosting location in Bothell, Washington. An estimated 15,000 crows use the roost each night in the fall and winter months. A long camera exposure captures the motion of the crows as they approach the roost.
    Crows_Approaching-Roost_Long-Exposur...jpg
  • Several American crows (Corvus brachyrhynchos) fly by hundreds of other crows that are perched in trees in the fog along North Creek in Bothell, Washington. An estimated 10,000 crows roost each night in the area.
    Crows_Foggy-Forest_North-Creek_3078.jpg
  • Thousands of American crows (Corvus brachyrhynchos) fill the twilight sky over Bothell, Washington, as they approach their nightly roost. As many as 15,000 crows use the roost during the winter months. A flock of crows is known as a murder.
    Crows_Murder_Bare-Tree_Bothell_3122.jpg
  • Thousands of American crows (Corvus brachyrhynchos) approach their nightly roosting location in Bothell, Washington. An estimated 15,000 crows use the roost each night in the fall and winter months. A long camera exposure captures the motion of the crows as they approach the roost.
    Crows_Approaching-Roost_Long-Exposur...jpg
  • Thousands of American crows (Corvus brachyrhynchos) approach their nightly roosting location in Bothell, Washington. An estimated 15,000 crows use the roost each night in the fall and winter months. A long camera exposure captures the motion of the crows as they approach the roost.
    Crows_Approaching-Roost_Long-Exposur...jpg
  • Thousands of American crows (Corvus brachyrhynchos) approach their nightly roosting location in Bothell, Washington. An estimated 15,000 crows use the roost each night in the fall and winter months. A long camera exposure captures the motion of the crows as they approach the roost.
    Crows_Approaching-Roost_Long-Exposur...jpg
  • Three American crows (Corvus brachyrhynchos) perched in a bare winter tree watch as a large flock of crows, known as a murder, fly past at dusk on their way to roosting grounds. An estimated 10,000 crows roost each night in the area.
    Crows_Murder_Perched-Fly-By_North-Cr...jpg
  • American crows (Corvus brachyrhynchos) circle over trees where hundreds of others have already landed along North Creek in Bothell, Washington. At least 10,000 crows roost each night in a small area of the city. This is a staging area where crows gather at sunset before moving as a large flock, or murder, to their roost.
    Crows_Circling-Roost_North-Creek_450...jpg
  • A long exposure captures the motion of American crows (Corvus brachyrhynchos) in flight as they approach their roost in the wetlands of Bothell, Washington, at dusk in autumn. An estimated 15,000 crows use the roost each night in the fall and winter months.
    Crows_Approaching-Roost_Long-Exposur...jpg
  • Thousands of American crows (Corvus brachyrhynchos) roost together in the wetlands of Bothell, Washington. As many as 15,000 crows use the roost each night during the winter months.
    Crows_Roost_Dusk_Bothell_1523.jpg
  • American crows zig-zag in the sky above North Creek in Bothell, Washington, as they look for a place to land. An estimated 10,000 or more crows roost in the area each night.
    Crows_Murder_ZigZag_North-Creek_2163.jpg
  • A long exposure captures the motion of American crows (Corvus brachyrhynchos) in flight as they approach their roost in the wetlands of Bothell, Washington, at dusk in autumn. An estimated 15,000 crows use the roost each night in the fall and winter months.
    Crows_Approaching-Roost_Long-Exposur...jpg
  • A long exposure captures the motion of American crows (Corvus brachyrhynchos) in flight as they approach their roost in the wetlands of Bothell, Washington, at dusk in autumn. An estimated 15,000 crows use the roost each night in the fall and winter months.
    Crows_Approaching-Roost_Long-Exposur...jpg
  • A long exposure captures the motion of American crows (Corvus brachyrhynchos) in flight as they approach their roost in the wetlands of Bothell, Washington, at dusk in autumn. An estimated 15,000 crows use the roost each night in the fall and winter months.
    Crows_Approaching-Roost_Long-Exposur...jpg
  • A large flock of American crows (Corvus brachyrhynchos), known as a murder, flies over trees lining the Sammamish River in Bothell, Washington. During the winter months, about 16,000 crows roost each night in the area in restored wetlands.
    Crows_Murder_Trees_Bothell_3398.jpg
  • A long exposure captures the motion of American crows (Corvus brachyrhynchos) in flight as they approach their roost in the wetlands of Bothell, Washington, at dusk in autumn. An estimated 15,000 crows use the roost each night in the fall and winter months.
    Crows_Approaching-Roost_Long-Exposur...jpg
  • Thousands of American crows (Corvus brachyrhynchos) in a large flock, known as a murder, fill the sky over Bothell, Washington, at dusk. An estimated 16,000 crows roost in a small area there each night.
    Crows_Murder_Sky-Full_Motion_Bothell...jpg
  • American crows (Corvus brachyrhynchos) come in to land on a roost in Bothell, Washington, that is home to as many as 15,000 crows each night during the winter months.
    Crows_Approaching-Roost_Bothell_0163.jpg
  • American crows (Corvus brachyrhynchos) come in to land on a roost in Bothell, Washington, that is home to as many as 15,000 crows each night during the winter months.
    Crows_Approaching-Roost_Bothell_0290.jpg
  • Thousands of American crows (Corvus brachyrhynchos) in a large flock known as a murder fill the twilight sky over North Creek in Bothell, Washington. An estimated 10,000 crows roost in the area each night.
    Crows_Murder_Sky-Full_Cumulus_North-...jpg
  • A large flock of American crows (Corvus brachyrhynchos), known as a murder, circles against the night sky as the birds look for a place to roost in Bothell, Washington. An estimated 10,000 crows roost in a small area in the city each night.
    Crows_Murder_Sky-Full_Flash_Bothell_...jpg
  • A large flock of American crows (Corvus brachyrhynchos), known as a murder, flies past bare winter trees along the Sammamish River in Bothell, Washington, on a dark, cloudy day. An estimated 10,000 crows roost in a small area in the city each night.
    Crows_Murder_Stormy_Bothell_3352.jpg
  • Thousands of American crows (Corvus brachyrhynchos) in a large flock known as a murder fill the twlight sky over North Creek in Bothell, Washington. An estimated 10,000 crows roost in the area each night.
    Crows_Murder_In-Flight_North-Creek_0...jpg
  • A murder of American crows (Corvus brachyrhynchos) roosts in a tree at twilight. A projected flash causes the birds' eyes to glow. A flock of crows is known as a murder.
    Crows_GlowingEyes_Perched_6780.jpg
  • A long exposure captures the motion of American crows (Corvus brachyrhynchos) in flight as they approach their roost in the wetlands of Bothell, Washington, at dusk in autumn. An estimated 15,000 crows use the roost each night in the fall and winter months.
    Crows_Approaching-Roost_Long-Exposur...jpg
  • A large flock of American crows (Corvus brachyrhynchos), known as a murder, flies over trees lining the Sammamish River in Bothell, Washington, as the moon rises. During the winter months, about 16,000 crows roost each night in the area in restored wetlands.
    Crows_Murder_Trees_Moon_Bothell_0963.jpg
  • A long exposure captures the motion of American crows (Corvus brachyrhynchos) flying to their nightly roost in Bothell, Washington. During the winter months, up to 15,000 crows use the roost each night.
    Crows_Murder_Flight_Long-Exposure_Bo...jpg
  • American crows (Corvus brachyrhynchos) seem to replace the leaves on the otherwise bare winter trees along the Sammamish River in Bothell, Washington. More than 10,000 crows roost in a small area of city each night in the winter months.
    Crows_Replace-Leaves_Bothell_9319.jpg
  • Hundreds of American crows (Corvus brachyrhynchos) in a large flock, known as a murder, fly over bare winter trees along the Sammamish River in Bothell, Washington, on a dark, cloudy day. An estimated 10,000 crows roost in a small area in the city each night.
    Crows_Murder_Stormy_Bothell_3395.jpg
  • Thousands of American crows (Corvus brachyrhynchos) in a large flock known as a murder fill the twlight sky over North Creek in Bothell, Washington. An estimated 10,000 crows roost in the area each night.
    Crows_Murder_In-Flight_North-Creek_2...jpg
  • A long exposure captures the motion of American crows (Corvus brachyrhynchos) in flight as they approach their roost in the wetlands of Bothell, Washington, at dusk in autumn. An estimated 15,000 crows use the roost each night in the fall and winter months.
    Crows_Approaching-Roost_Long-Exposur...jpg
  • Thousands of American crows (Corvus brachyrhynchos) in a large flock, known as a murder, fill the sky over Bothell, Washington, at dusk. An estimated 16,000 crows roost in a small area there each night.
    Crows_Murder_Sky-Full_Motion_Bothell...jpg
  • A large flock of American crows (Corvus brachyrhynchos), known as a murder, flies over trees lining the Sammamish River in Bothell, Washington, as the moon rises. During the winter months, about 16,000 crows roost each night in the area in restored wetlands.
    Crows_Murder_Trees_Moon_Bothell_0977.jpg
  • American crows (Corvus brachyrhynchos) come in to land on a roost in Bothell, Washington, that is home to as many as 15,000 crows each night during the winter months.
    Crows_Approaching-Roost_Bothell_0286.jpg
  • Dozens of American crows (Corvus brachyrhynchos) roost in trees along the Sammamish River in Bothell, Washington, as the full moon rises. Crows gather in several temporary roosts at sunset, moving together into one roost that numbers more than 10,000 birds at nightfall.
    Crows_Roosting_Full-Moon_Bothell_979...jpg
  • An American crow (Corvus brachyrhynchos) perched at the top of a snag watches over hundreds of others that are perched in the trees along North Creek in Bothell, Washington. An estimated 10,000 crows roost in a small area of the city each night.
    Crows_Perched_Snag_Sunset_North-Cree...jpg
  • A large flock of American crows (Corvus brachyrhynchos), known as a murder, circles against the night sky as the birds look for a place to roost in Bothell, Washington. An estimated 10,000 crows roost in a small area in the city each night.
    Crows_Murder_Sky-Full_Flash_Bothell_...jpg
  • Thousands of American crows (Corvus brachyrhynchos) in a large flock known as a murder fly over Bothell, Washington, at dusk. An estimated 10,000 crows roost in a small area in the city each night.
    Crows_Murder_Sky-Full_Bothell_4061.jpg
  • A large flock of American crows (Corvus brachyrhynchos), known as a murder, flies past bare winter trees along North Creek in Bothell, Washington, at dusk on their way to their night roosting grounds. An estimated 10,000 crows roost in a small area in the city each night.
    Crows_Murder_In-Flight_North-Creek_1...jpg
  • Thousands of American crows (Corvus brachyrhynchos) in a large flock, known as a murder, fill the sky over Bothell, Washington, at dusk. An estimated 16,000 crows roost in a small area there each night.
    Crows_Murder_Sky-Full_Motion_Bothell...jpg
  • Hundreds of American crows (Corvus brachyrhynchos) in a large flock, known as a murder, fly over bare winter trees along the Sammamish River in Bothell, Washington, on a dark, cloudy day. An estimated 10,000 crows roost in a small area in the city each night.
    Crows_Murder_Forest_Moon_Bothell_333...jpg
  • Hundreds of American crows (Corvus brachyrhynchos) in a large flock known as a murder fill the cloudy sky over Bothell, Washington. An estimated 10,000 crows roost in the area each night.
    Crows_Murder_Flight_Cloudy_6464.jpg
  • Thousands of American crows (Corvus brachyrhynchos) in a large flock, known as a murder, fill the sky over Bothell, Washington, at dusk. An estimated 10,000 crows roost in a small area there each night.
    Crows_Murder_Sky-Full_Bothell_4095.jpg
  • Hundreds of American crows (Corvus brachyrhynchos) in a large flock known as a murder fill the cloudy sky at sunset over Bothell, Washington. An estimated 16,000 crows roost in the area each night.
    Crows_Murder_Flight_Cloudy_1341.jpg
  • A large flock of American crows (Corvus brachyrhynchos), known as a murder, circles against the night sky as the birds look for a place to roost in Bothell, Washington. An estimated 10,000 crows roost in a small area in the city each night.
    Crows_Murder_Sky-Full_Flash_Bothell_...jpg
  • Three American crows (Corvus brachyrhynchos) rest in a bare winter tree as fog rolls in over North Creek in Bothell, Washington. An estimated 10,000 crows roost each night in the area.
    Crows_Foggy-Perch_North-Creek_2415.jpg
  • A murder of American crows (Corvus brachyrhynchos) flies over Snohomish County, Washington, on the way to the birds' night roosting spot with some of their wings catching the golden light of sunset.
    Crows_American_Murder-In-Flight_5491.jpg
  • A murder of crows (Corvus brachyrhynchos) flies over autumn trees as the birds approach their roost in Bothell, Washington. As many as 15,000 crows use the roost each night during the fall and winter months.
    Crows_Fall-Color_Bothell_9175.jpg
  • A murder of American crows (Corvus brachyrhynchos) roosts in a tree at twilight.
    Crows_Perched_Twilight_Kenmore_6781.jpg
  • A murder of American crows (Corvus brachyrhynchos) flies low over the trees in wetlands in Bothell, Washington, as they prepare to roost for the night.
    Crows_Roost-Fly-By_Bothell_0277.jpg
  • More than a dozen American crows (Corvus brachyrhynchos) fly past a stormy cumulonimbus cloud over Bothell, Washington.
    Crows_Flight_Storm-Cloud_Bothell_672...jpg
  • A long exposure captures the motion of thousands of American crows (Corvus brachyrhynchos) flying at dusk to their roost in Bothell, Washington.
    Crows_Approaching-Roost_Long-Exposur...jpg
  • Seven American crows (Corvus brachyrhynchos), one carrying food that it scavenged, fly past maple trees displaying a variety of autumn colors in Kenmore, Washington.
    Crows_Fall-Color_Kenmore_2357.jpg
  • Several American crows (Corvus brachyrhynchos) take off against a fiery sky just before sunrise at their roost site in Bothell, Washington.
    Crows_Flying_Fiery-Sky_Bothell_2728.jpg
  • Ten American crows (Corvus brachyrhynchos) fly past a stormy cumulonimbus cloud over Bothell, Washington.
    Crows_Flight_Stormy_Bothell_6275.jpg
  • Hundreds of American crows (Corvus brachyrhynchos) take off at moonrise from their temporary perch along the Sammamish River in Bothell, Washington. They spend the day in small groups of up to a dozen, but gather in large groups near sunset. At night, they all fly to one large roost that is home to more than 10,000 crows.
    Crows_Flying-At-Moonrise_Bothell_951...jpg
  • American crows (Corvus brachyrhynchos) rest in a bare winter tree surrounded by fog along North Creek in Bothell, Washington.
    Crows_Foggy-Tree_North-Creek_2286.jpg
  • Numerous crows (Corvus brachyrhynchos) take off from a tree at dawn in winter. The motion of the birds in flight is blurred by a long camera exposure. A large flock of crows is known as a murder.
    Crows_TakingOff_Tree_Winter_6785.jpg
  • An exceptionally large murder of crows (Corvus brachyrhynchos) flies over autumn trees as the birds approach their roost in Bothell, Washington. As many as 15,000 crows use the roost each night during the fall and winter months.
    Crows_Fall-Color_Twilight_Bothell_48...jpg
  • Hundreds of American crows (Corvus brachyrhynchos) in a large flock known as a murder fly over the Sammamish River in Bothell, Washington, on their way to their night roosting grounds. More than 10,000 crows roost together each night in the winter months.
    Crows_Murder_Between-Trees_Bothell_9...jpg
  • Dozens of American crows (Corvus brachyrhynchos) take off from bare winter trees as the sun sets in Bothell, Washington.
    Crows_Golden-Trees_Bothell_9020.jpg
  • Dozens of American crows (Corvus brachyrhynchos) fly to join thousands of others that are roosting in trees along North Creek in Bothell, Washington.
    Crows_Murder_Roosting_North-Creek_02...jpg
  • A murder of crows (Corvus brachyrhynchos) flies over autumn trees as the birds approach their roost in Bothell, Washington. As many as 15,000 crows use the roost each night during the fall and winter months.
    Crows_Fall-Color_Bothell_9110.jpg
  • Several American crows (Corvus brachyrhynchos) take off against a fiery sky just before sunrise at their roost site in Bothell, Washington.
    Crows_Flying_Fiery-Sky_Bothell_2727.jpg
  • Several hundred American crows (Corvus brachyrhynchos) try to fly against 50-mile-per-hour winds to their roost during a strong storm in Bothell, Washington.
    Crows_Murder_Storm-Cloud_Bothell_700...jpg
  • A dozen American crows (Corvus brachyrhynchos) fly past a stormy cumulonimbus cloud over Bothell, Washington.
    Crows_Dozen-In-Flight_Stormy_Bothell...jpg
  • Dozens of American crows (Corvus brachyrhynchos) fly to join thousands of others that are roosting in trees along North Creek in Bothell, Washington.
    Crows_Murder_Roosting_North-Creek_02...jpg
  • A murder of crows (Corvus brachyrhynchos) flies over autumn trees as the birds approach their roost in Bothell, Washington. As many as 15,000 crows use the roost each night during the fall and winter months.
    Crows_Fall-Color_Bothell_7453.jpg
  • A murder of crows (Corvus brachyrhynchos) flies over autumn trees as the birds approach their roost in Bothell, Washington. As many as 15,000 crows use the roost each night during the fall and winter months.
    Crows_Fall-Color_Bothell_4763.jpg
  • An American crow (Corvus brachyrhynchos) calls at another one that has landed on its perch at the top of a Douglas fir tree in Kirkland, Washington.
    Crows_Two-On-Branch_Kirkland_1180.jpg
  • A murder of crows (Corvus brachyrhynchos) fills the evening sky near Kenmore, Washington. A large flock of crows is known as a murder, a name that came about because a group of crows will sometimes work together to kill a dying crow. Crows are found throughout the world with the exception of South America, New Zealand and Antarctica.
    Crows_Murder_InFlight_5876.jpg
  • A murder of American crows flies over a forested area of Bothell, Washington, as the full harvest moon rises.
    Moon_Full_Crows_Bothell_3128.jpg
  • An American crow (Corvus brachyrhynchos) takes off from its foggy perch in a tree along North Creek in Bothell, Washington, joining thousands of other crows on their way to their night roosting area. An estimated 10,000 crows roost in the area.
    Crows_Taking-Off_Foggy_North-Creek_2...jpg
  • An American crow (Corvus brachyrhynchos) attacks a bald eagle (Haliaeetus leucocephalus) in flight over Heritage Park, Kirkland, washington. Crows frequently attack bald eagles, hawks, osprey, and other perceived predators, an act known as mobbing. While mobbing crows have cut humans, their goal typically is to just force the predator out of their territory.
    BaldEagle_Crow_Attacking_InFlight_95...jpg
  • An American Crow (Corvus brachyrhynchos) dives to attack a Bald Eagle (Haliaeetus leucocephalus) perched at the top of a tree in Kirkland, Washington. Crows are often seen chasing hawks or eagles in flight, or repeatedly diving at them when they perched, a practice known as mobbing. Research is inconclusive, but scientists think this harassment helps to force the birds of prey to hunt elsewhere, ultimately reducing the threat to the crows and lowering competition for food.
    BaldEagle_Crow_Attacking_Kirkland_20...jpg
  • An American crow (Corvus brachyrhynchos) rests on a street light in Bothell, Washington, as the sun begins to set. During the fall and winter months as many as 15,000 crows roost each night in the city.
    Crow_Street-Light_Bothell_5221.jpg
  • Ten American crows (Corvus brachyrhynchos) fly past storm clouds on their way to their roost in Bothell, Washington. As many as 15,000 crows use the roost each night during the winter months.
    Crows_Flying_Storm-Cloud_Bothell_627...jpg
  • A flock of American crows (Corvus brachyrhynchos), known as a murder, fly across the twilight sky on their way to roosting grounds in Bothell, Washington. An estimated 10,000 crows roost in a small area of the city each night.
    Crows_Murder_In-Flight_North-Creek_2...jpg
  • Viewed through autumn leaves, a large murder of American crows (Corvus brachyrhynchos) fills the sky on the way to a roost site in Bothell, Washington. During the fall and winter months, as many as 15,000 crows roost there each night.
    Crows_Fall-Color_Through-Leaves_Both...jpg
  • An American crow (Corvus brachyrhynchos) flies to join hundreds of other crows that are roosting in trees along North Creek in Bothell, Washington. An estimated 10,000 crows roost each night in a small area of the city.
    Crows_One-Flying_One-Tree_North-Cree...jpg
  • Two American crows (Corvus brachyrhynchos) trade places on a bare branch near the top of a tree in Snohomish County, Washington.
    Crows_Trading-Places_Branch_Lynnwood...jpg
  • Nine American crows (Corvus brachyrhynchos) feed near the point where South Creek in Seahurst Park, Burien, Washington, empties into Puget Sound.
    Crows-American_Seahurst-Park_Creek_6...jpg
  • A murder of American crows flies over a forested area of Bothell, Washington, as a crescent moon and the planets Mars, Saturn and Jupiter are visible in the sky. Mars is visible to the upper-right of the moon. Saturn and Jupiter appear among the crows on the right side of the image. Bothell is home to a large crow roost, used by as many as 16,000 crows during the winter months. The conjunction of the moon, Mars, Saturn and Jupiter was visible on April 16, 2020.
    Crows_Moon_Three-Planets_Bothell_371...jpg
  • A few dozen American crows (Corvus brachyrhynchos) sit together in a tree overlooking Puget Sound, waiting for the sun to set in Seattle, Washington.
    Crows_Dozens_Roost_Puget-Sound_6627.jpg
  • A projected flash causes the eyes of two American crows (Corvus brachyrhynchos) to glow. The birds on a bare tree are otherwise rendered in silhouette as the sky is colored by the sunset.
    Crows_GlowingEyes_5277.jpg
  • A long exposure captures the motion of a murder of American crows flying over snow-covered trees along the Sammamish River in Bothell, Washington. During the winter months, 15,000 crows roost each night in the area.
    Crows_Murder_Snow_3570.jpg
  • A murder of American crows fly over snow-covered trees along the Sammamish River in Bothell, Washington. During the winter months, 15,000 crows roost each night in the area.
    Crows_Murder_Snow_3624.jpg
  • A murder of American crows flies low over trees in Lynnwood, Washington.
    Crows_Murder_Trees_Lynnwood_3925.jpg
  • An American Crow (Corvus brachyrhynchos) dives to attack a Bald Eagle (Haliaeetus leucocephalus) as it watches over its nest in Kirkland, Washington. The nearly full moon is visible in the background. Crows are often seen chasing hawks or eagles in flight, or repeatedly diving at them when they perched, a practice known as mobbing. Research is inconclusive, but scientists think this harassment helps to force the birds of prey to hunt elsewhere, ultimately reducing the threat to the crows and lowering competition for food..
    BaldEagle_Crow_Attacking_Moon_Kirkla...jpg
  • An American Crow (Corvus brachyrhynchos) dives to attack a Bald Eagle (Haliaeetus leucocephalus) perched at the top of a tree in Kirkland, Washington. Crows are often seen chasing hawks or eagles in flight, or repeatedly diving at them when they perched, a practice known as mobbing. Research is inconclusive, but scientists think this harassment helps to force the birds of prey to hunt elsewhere, ultimately reducing the threat to the crows and lowering competition for food..
    BaldEagle_Crow_Attacking_Kirkland_18...jpg
  • An American Crow (Corvus brachyrhynchos) dives to attack a Bald Eagle (Haliaeetus leucocephalus) perched at the top of a tree in Kirkland, Washington. Crows are often seen chasing hawks or eagles in flight, or repeatedly diving at them when they perched, a practice known as mobbing. Research is inconclusive, but scientists think this harassment helps to force the birds of prey to hunt elsewhere, ultimately reducing the threat to the crows and lowering competition for food.
    BaldEagle_Crow_Attacking_Kirkland_21...jpg
  • An American crow (Corvus brachyrhynchos) flies over trees displaying their fall colors along the Sammamish River in Bothell, Washington. During the fall and winter months, more than 10,000 crows roost each night in the area.
    Crow_Flying_Fall-Color_Bothell_8767.jpg
  • Against a hazy sky, an American crow (Corvus brachyrhynchos) flies over its roost in Bothell, Washington. As many as 15,000 crows use that roost each night during the winter months.
    Crow_Flying_Bothell_Hazy-Dawn_3821.jpg
  • An American crow flies over evergreen trees blanketed in snow on a cold winter morning in Bothell, Washington.
    Crow_Flying_Winter_Forest_Bothell_52...jpg
  • Shown against a white background, the structure of an American crow (Corvus brachyrhynchos) feature is visible.
    Feather_Crow_3345.jpg
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