Atherosclerosis in Pet Birds

Atherosclerosis is a disease of the arteries. Fatty and fibrous material builds up in the vessel wall, making the artery thicker, stiffer, and narrower. In birds, these plaques are often found in major arteries such as the aorta and brachiocephalic arteries. Over time, blood flow becomes less efficient, and the damaged vessel lining may also increase the risk of clot formation.

In pet birds, atherosclerosis is especially important because signs can stay hidden until disease is advanced. A bird may seem a little quieter, tire more easily, or breathe harder with handling. Some birds are not diagnosed until they develop heart failure, neurologic signs, or sudden death. Psittacine birds are commonly affected, and the condition is often seen in older birds, although African grey parrots can develop it at a younger age than many other species.

This is not a condition pet parents can confirm at home. If you are noticing stamina changes, episodes of weakness, or unexplained breathing effort, your vet can help sort out whether the problem is cardiovascular, respiratory, or something else entirely.

Atherosclerosis is considered multifactorial, which means there is usually not one single cause. In pet birds, recognized risk factors include a sedentary lifestyle, high-fat diets, and hypercholesterolemia. Seed-heavy diets are often discussed because many companion parrots selectively eat higher-fat seeds and may not get the balanced nutrition they need from a formulated diet plan.

Age also matters. Many affected birds are older than 15 years, and females appear to be affected more often in some reports. Certain species seem especially susceptible, including Amazon parrots, African grey parrots, Quaker parrots, and macaws. In African greys, the disease has been reported even in relatively young birds.

Other health and management factors may contribute as well. Limited flight or climbing opportunities, obesity, chronic reproductive activity, and long-term nutritional imbalance may all increase cardiovascular strain. That does not mean a pet parent caused the disease. It means your vet may look at the whole picture, including diet, activity, body condition, species, age, and any concurrent illness, when discussing risk.

Diagnosis usually starts with a careful history and physical exam, but atherosclerosis cannot be confirmed by symptoms alone. Your vet will often recommend baseline testing such as a complete blood count, chemistry panel, and imaging. In birds with suspected heart disease, radiographs are commonly used to look for an enlarged cardiac silhouette, fluid buildup, or other changes that could explain breathing problems or weakness.

Advanced evaluation may include echocardiography and, in some cases, CT imaging. Merck notes that diagnosis of cardiovascular disease in birds is based on clinical signs, physical examination findings, and imaging such as radiographs or CT, and that an initial workup often includes CBC, biochemistry, imaging, and echocardiogram. Because avian cardiac disease can be difficult to recognize and may mimic respiratory disease, referral to an avian specialist or cardiology consultant can be very helpful.

Sometimes the diagnosis is presumptive rather than absolute in a living bird. Your vet may combine species risk, age, exam findings, bloodwork, and imaging results to judge how likely atherosclerosis is and to rule out other problems such as infection, egg-related disease, liver disease, tumors, or primary respiratory disease. The goal is to build the safest, most practical plan for your bird.

Prevention focuses on long-term cardiovascular health. For many pet birds, that means working with your vet on a balanced diet rather than relying on a seed-heavy menu. A formulated pellet-based diet, with species-appropriate vegetables and controlled treats, is often part of that conversation. The exact plan depends on your bird’s species, age, preferences, and any other medical conditions.

Daily movement matters too. Birds need safe opportunities to climb, flap, forage, and, when appropriate, fly. A larger, enriching environment with varied perches and regular activity can help reduce sedentary habits. Weight monitoring is useful because gradual gain can be easy to miss in feathered patients.

Routine wellness visits are one of the best prevention tools. Your vet may catch subtle body condition changes, reproductive issues, or early signs of cardiovascular disease before a crisis happens. Prevention cannot guarantee that a susceptible bird will never develop atherosclerosis, but thoughtful nutrition, exercise, and regular veterinary care can lower risk and support a better quality of life.