What Do Bald Eagles Eat?

Fish form the largest and most important part of a bald eagle's diet, making up roughly eighty-five percent of what they eat across their range. Bald eagles hunt salmon, especially in coastal areas and northern rivers where salmon runs occur seasonally. Carp, catfish, herring, and other medium-sized fish are also major prey in various regions of the country. Eagle hunting success depends significantly on water conditions and fish availability in their territory. Eagles prefer fish that are abundant and relatively easy to catch compared to rare or deep species. In different regions of the US, different fish species form the backbone of the local eagle diet and food chain. In Florida and coastal areas, mullet and other saltwater fish are common prey for resident eagles. In mountain regions, eagles hunt trout and other freshwater species found in rivers and lakes. Eagles also hunt waterfowl including ducks, geese, cormorants, grebes, and other water birds consistently. Small mammals including rabbits, hares, squirrels, muskrats, and occasionally raccoons supplement the fish diet significantly. Eagles will opportunistically eat whatever prey is available, and their diet becomes more varied during seasons when preferred fish are scarce. The size and power of bald eagles allows them to hunt large birds and mammals that smaller raptors cannot catch.

Winter drives major changes in bald eagle diet and behavior throughout their migration patterns and territories. During winter, lakes and rivers freeze, reducing the availability of fish and forcing eagles to congregate at remaining open water. These winter gatherings occur at power plants with warm-water discharge, dams with moving water, and coastal areas that never freeze. Eagles hunt smaller fish species during winter that are available in open water in their regions. Some winter fish are easier to catch because they concentrate in limited open-water areas naturally when cold arrives. In spring, ice melts and eagles have more options for hunting locations across their range. Spring also brings spawning runs of salmon and shad that attract eagles to rivers and streams. Summer is lean for eagle hunting in many areas because fish become more dispersed and deeper in cooler water. Many northern eagles travel south for winter while others remain year-round where water stays open continuously. Fall brings the salmon and shad runs again, providing concentrated food sources that eagles exploit heavily. Late summer and fall is when eagle populations are highest because young birds have fledged and adults build fat reserves. These seasonal movements and diet shifts are driven entirely by food availability and water conditions.

Coastal eagles in states like California and Washington hunt ocean and saltwater fish primarily as their main diet. Pacific salmon runs make coastal areas rich feeding grounds for eagles from Alaska to California continuously. Atlantic coast eagles in Florida and other southeastern states hunt saltwater fish and waterfowl as primary prey. Great Lakes eagles hunt lake fish and waterfowl that live in freshwater environments year-round. Western mountain eagles hunt trout in rivers and streams at high elevations where fish thrive. Southern river eagles hunt catfish, bass, and other warmwater fish species found in their territories. Northern forest eagles hunt whatever fish are available in lakes and rivers in remote areas. Desert eagles living far from large water bodies hunt more mammalian prey than coastal eagles do. Arctic and far-northern eagles hunt fish in summer and depend on alternative prey in winter months. Texas eagles hunt different species than Massachusetts eagles because water types differ dramatically. Habitat type determines what fish and mammal prey are available in different ecological zones. Regional prey abundance and seasonal timing vary widely across the country and world. This geographic variation means that successful hunting techniques differ between eagle populations living in different environments and regions.

Bald eagles hunt with their eyes, spotting prey from great distances while soaring high above water and landscape. Eagles circle high in the sky scanning the water below for fish disturbance or waterfowl movement consistently. When a suitable target is spotted, the eagle folds its wings and dives at incredible speeds reaching over one hundred miles per hour. During the dive, the eagle's legs extend forward with talons fully spread and open for gripping. At the last moment before impact, the eagle adjusts its angle to align talons with the target precisely. The powerful talons strike with tremendous force and pierce or grab the prey with crushing strength. Fish hunting requires the eagle to time the dive perfectly to snatch fish from the water surface effectively. Some fish are grabbed right at the surface while others are plucked from just below where eagles reach. Waterfowl hunting requires different tactics because birds can fly away and maneuver in the air. Eagles chase diving ducks and geese through the air, trying to intercept or wear down their prey. Mammal hunting happens on the ground with the eagle swooping down and using talons to kill before eating. Injured or weakened prey is easier to catch than healthy prey in good condition. Eagles learn hunting skills from parents and improve with experience over years of practice and training.

Eaglets fed by parents eat whatever the adults catch and bring to the nest for feeding. Parent eagles tear prey into small pieces for tiny chicks that cannot eat large chunks or whole prey items. As eaglets grow, parents bring progressively larger pieces and whole small fish for developing birds. Chicks learn to tear their own food by practicing on prey provided by parents in the nest. Fledgling eagles, young birds that have left the nest but are not yet independent, struggle to catch their own food successfully at first. Young eagles often starve during their first year because hunting is difficult and their skills are undeveloped naturally. Successful hunting comes only with practice and trial and error over months and years. Two to three year old immature eagles become gradually better hunters as they gain experience. Adult-sized birds at four years old still may not hunt as well as fully mature five-year-old adults in their prime. Female eagles are larger than males and may be slightly more successful hunters, though this varies by individual. Parents stop feeding fledglings after a few weeks or months, forcing young eagles to learn to hunt or starve. Winter is the hardest season for young eagles because experienced adults maintain territories with best fishing locations. Young eagles gradually develop the strength, coordination, and judgment needed for successful hunting and survival.

Bald eagles do not hunt people or large pets and pose no direct threat during feeding time naturally. Eagles in urban and suburban areas have learned to hunt fish in city parks and golf course ponds successfully. Eagles also scavenge on road-killed deer and other dead animals, which can be seen alongside highways. Never approach an eagle on the ground eating a meal, as it may strike defensively to protect food. If eagles gather around livestock areas, keep young animals supervised and in enclosures if possible. Most conflicts between eagles and farmers occur over livestock predation but this is relatively rare overall. Boat operators should avoid disturbing eagles feeding near water and in their territories. Do not attempt to feed eagles, and do not remove dead animals that might provide natural food for them. Eagles have recovered from endangerment in most of the country and now live successfully near humans. Protecting shorelines and preserving open water access benefits both eagles and human recreation in many areas. Watching eagles hunt and feed from safe distance is one of the great privileges of wildlife observation. Understanding their role in the ecosystem helps people coexist peacefully with these remarkable predators.

Osprey hunt the same fish as bald eagles but are smaller and specialize in fish hunting almost exclusively. Osprey plunge into water feet-first while eagles snatch from surface, giving each different fishing success rates naturally. Golden eagles hunt similar mammalian prey to bald eagles but are rarer and more common in mountain areas. Red-tailed hawks hunt smaller mammals and rodents that bald eagles generally ignore completely. Peregrine falcons hunt flying birds by diving from high altitude and are specialists on fast-flying prey. Great blue herons catch fish by standing in water and stabbing with their bills, a completely different hunting technique. Cormorants dive underwater to catch fish, accessing prey at depths where eagles cannot reach or survive. All these raptors and hunting birds occupy overlapping but distinct ecological niches based on their size. Bald eagles' large size and powerful talons make them apex predators that can hunt larger prey than most other US raptors. Their specialized hunting of large fish and waterfowl sets them apart from smaller, more rodent-focused raptors. The variety of hunting strategies used by different raptors reduces direct competition even in shared habitats and territories effectively.