Slender-billed Cockatoo Bird: Personality, Lifespan, Food & Care
General Introduction of the Breed
The Slender-billed Cockatoo (Cacatua tenuirostris) is a species of cockatoo native to Australia. It is also commonly known as the Long-billed Corella. This bird is primarily found in southeastern Australia, particularly in Victoria and parts of New South Wales and South Australia.
Historically, the Slender-billed Cockatoo was more prevalent in open woodlands and grasslands. Due to habitat changes, it has adapted to urban environments where it is often seen in large flocks.
Table of Contents
Common Name | Slender-billed Cockatoo, Long-billed Corella |
Scientific Name | Cacatua tenuirostris |
Origin | Southeastern Australia |
Size | 38-41 cm (length) |
Lifespan | Around 40-50 years |
Talking Ability | Yes, known for mimicking human speech and sounds |
Colors | Predominantly white with a pinkish-red patch around the eyes |
Noise Level | High (can be noisy with loud calls) |
Social Behavior | Highly intelligent, social, affectionate; forms strong bonds, needs attention |
Physical Characteristics
The Slender-billed Cockatoo is a medium-sized parrot, growing to around 38-41 cm in length and weighing between 500-700 grams. It has a striking appearance with predominantly white plumage, a pinkish-red patch around the eyes, and a long, slender, curved bill.

The bird’s eyes are dark brown, and it has a short, rounded tail. Its distinctive long upper mandible is specialized for digging into the soil to find roots, bulbs, and seeds.
Read More: Silver Appleyard Duck
Personality and Temperament
Slender-billed Cockatoos are highly intelligent and social birds. They are known for their ability to mimic human speech and sounds, making them highly interactive companions.
They are energetic and require plenty of mental and physical stimulation. These cockatoos form strong bonds with their owners and can be very affectionate. However, they are also prone to developing behavioral problems like feather plucking if not given enough attention and enrichment.
With proper socialization, they can be friendly toward humans and other pets. However, they can be noisy, and their loud calls may not be suitable for all households.

Care and Maintenance Requirements
These birds need spacious housing, preferably a large aviary or a roomy cage with plenty of perches and toys for mental engagement. They require regular exercise outside their cage.
Slender-billed Cockatoos need minimal grooming but should have regular nail and beak trims. Bathing or misting helps maintain feather health.
They are sensitive to extreme temperatures, so their environment should be kept at moderate conditions, avoiding excessive heat or cold.
Diet and Nutrition
The ideal diet for a Slender-billed Cockatoo consists of high-quality pellets, fresh vegetables, fruits, and seeds in moderation. They particularly enjoy root vegetables like carrots as well as leafy greens.
Certain foods such as avocado, chocolate, caffeine, and salted foods should be strictly avoided, as they are toxic to parrots.
Feeding should be done twice a day, ensuring the bird has a nutritionally balanced diet.

Health and Common Medical Issues
Common health issues in Slender-billed Cockatoos include Psittacine Beak and Feather Disease (PBFD), respiratory infections, and obesity due to poor diet.
They are also prone to liver disease if fed too many fatty seeds.
Regular vet check-ups, vaccinations, and a balanced diet can help prevent common illnesses and ensure a lifespan of around 40-50 years.
Read More: Green-winged Macaw
Training and Behavior Management
Training a Slender-billed Cockatoo is relatively easy due to its intelligence. Positive reinforcement techniques such as praise and treats work best.
Early socialization is important for preventing undesirable behaviors like excessive screaming or biting.
Interactive training sessions, including speech training and trick training, can help keep them engaged and well-behaved.
Interaction with Other Animals and Humans
These cockatoos can be affectionate and playful, making them suitable for families. However, their loud calls might not be ideal for noise-sensitive households.
They generally get along well with other birds but should be gradually introduced under supervision.
They require a lot of attention from their owners and do not thrive well when left alone for long hours.

Price and Availability
The cost of a Slender-billed Cockatoo can range from $1,000 to $3,000 depending on age, breeder reputation, and location.
It is recommended to purchase from reputable breeders or adopt from bird rescue organizations to ensure ethical sourcing.
Potential owners should consider the long lifespan and the time commitment needed before adopting this breed.
Conclusion and Final Thoughts
The Slender-billed Cockatoo is a highly intelligent and social parrot that makes a delightful pet for experienced bird owners. However, its high energy levels and loud calls require a dedicated and patient owner.
These birds thrive in environments where they receive daily interaction, training, and enrichment activities. They are best suited for families or individuals who can provide them with consistent care and companionship.
Before choosing this breed, potential owners should carefully consider the bird’s long lifespan and social needs to ensure a good match for their lifestyle.
Read More: Lemon Dove Bird
FAQ
What is another name for the Slender-billed Cockatoo?
It is also commonly known as the Long-billed Corella.
Can Slender-billed Cockatoos talk?
Yes, they are known for their ability to mimic human speech and other sounds.
How long do Slender-billed Cockatoos typically live?
They have a lifespan of around 40-50 years with proper care.
Are Slender-billed Cockatoos noisy?
Yes, they can be noisy, and their loud calls might not be suitable for all living situations.
What kind of diet do Slender-billed Cockatoos need?
They need a balanced diet of high-quality pellets, fresh vegetables, fruits, and seeds in moderation. Avoid toxic foods like avocado and chocolate.