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10 Fascinating Facts About the Blue-crowned Parakeet

The Blue-crowned Parakeet, scientifically known as Thectocercus acuticaudatus, is a beautiful bird species that belongs to the family Psittacidae. Native to South America, these charismatic parakeets have captivated the hearts of bird enthusiasts with their stunning blue crowns and their lively personalities.


Field Identification

The Blue-crowned Parakeet is a medium-sized parrot that measures around 33 cm in length and weighs about 150-175 grams. The bird displays a green body with a blue crown and cheeks, as well as an orange patch above its beak.

Its wings are green with a yellow patch on the primary feathers, and the tail is long and pointed.

Similar Species

The Blue-crowned Parakeet can be easily distinguished from other parakeets by its striking blue crown. The closest resembling bird species to the Blue-crowned Parakeet is the Mitred Parakeet which also has a blue crown but can be identified by a different color pattern.


The plumage pattern of the Blue-crowned Parakeet is relatively stable throughout its lifespan, unlike some other birds that undergo dramatic changes from one season to another.


The Blue-crowned Parakeet undergoes a regular molt once or twice a year, where it sheds its old feathers and replaces them with new ones. Molting is a vital process for maintaining healthy feathers and appearance.


In the wild, Blue-crowned Parakeets are sociable birds that form large flocks of around 20-30 birds or more. They can be observed flying together, foraging and communicating using complex vocalizations, and physical displays.


Blue-crowned Parakeets typically breed during the warm months, which is between October and March, and usually lay between 2 to 4 eggs. The incubation period lasts for 24 27 days, with both parents taking turns to incubate the eggs.

Once hatched, the chicks are completely reliant on the parents, and they are fed on a diet of regurgitated food for a period of about 6 weeks.

Conservation Status

Blue-crowned Parakeets are considered a species of least concern by the International Union for

Conservation of Nature (IUCN). Nevertheless, the population of these birds is threatened in certain regions due to habitat fragmentation and destruction, as well as illegal collection for pet trade.


In conclusion, the Blue-crowned Parakeet is a fascinating bird species, characterized by its beautiful blue crown and sociable behavior. Understanding the identification traits, plumages, and breeding behavior of these birds is critical in conservation and further research.

Let us continue to appreciate and conserve these birds before they disappear from our planet.

Systematics History

The Blue-crowned Parakeet is a member of the order Psittaciformes and family Psittacidae. The species was originally described by the French naturalist Louis Jean Pierre Vieillot in 1818.

Since then, there has been a lot of taxonomic debate on the classification of this species.

Geographic Variation

The Blue-crowned Parakeet is found in various regions throughout South America. As a result, there are different populations of the bird with regional physical variations, leading to geographic variation.

For instance, individuals in the northern regions of Brazil have a more extensive orange bill base compared to individuals in southern regions.


The classification of subspecies is crucial in conservation management, as the identification of subspecies may reveal specific population groups with particular vulnerabilities. Currently, Thectocercus acuticaudatus has several recognized subspecies which include T.

a. neumanni, T.

a. koenigi, T.

a. haemorrhous, T.

a. stellatus, and T.

a. acuticaudatus.

Related Species

Close relatives to Thectocercus acuticaudatus include the White-eyed Parakeet (Aratinga leucophthalma) and the Mitred Parakeet (A. mitrata).

In addition, there has been taxonomic debate as to whether some other species such as the Maroon-tailed Parakeet (Pyrrhura melanura) are more closely related to Thectocercus acuticaudatus than the Mitred Parakeet.

Historical Changes to Distribution

The Blue-crowned Parakeet has undergone historical changes in its distribution and abundance across South America. The species’ range extends from Colombia, Venezuela, and Guyana through Brazil into northern Argentina.

Native to South America, this bird has been introduced to some countries, where it has established as an introduced population. In the United States, the Blue-crowned Parakeet has colonized parts of Florida due to their accidental release and subsequent establishment.

The reasons for the historical changes to the distribution of Thectocercus acuticaudatus include habitat loss, habitat fragmentation, the pet trade, and dispersal.

Habitat loss and fragmentation occur mainly due to agricultural expansion, urbanization, mining, and logging.

In addition, the pet trade has been a significant contributor to historical changes in the distribution of this bird species. Due to their charismatic appearance and lively personalities, the Blue-crowned Parakeet is highly sought after in pet trade.

Illegal trapping and poaching of wild animals for commercial pet trade have contributed to the declines and disappearance of regional populations. As a result of these historical changes, Thectocercus acuticaudatus faces significant threats to its survival.

The fragmentation of habitats and alteration of ecosystems have created isolation and population decline for regional populations. In addition, introduced populations are threatening native flora and fauna by competing with them for food resources.

Conservation organizations such as the IUCN (International Union for

Conservation of Nature) have recognized Thectocercus acuticaudatus as a species of least concern due to the adequate population sizes in most of its native ranges. However, the effects of habitat loss and fragmentation, illegal activities, and biological invasion could have long-term consequences.

Therefore, the conservation of this bird species is critical to maintaining its genetic diversity and preserving its essential ecological functions.


Thectocercus acuticaudatus is a fascinating bird species that has undergone significant changes in its distribution and taxonomy. With regional geographic variation, distribution is influenced by habitat and illegal activities.

Despite being classified as a species of least concern, the threats to the survival of this bird species are significant. Continued conservation efforts are imperative to ensure the preservation of this species for future generations.


The Blue-crowned Parakeet is naturally found in a range of habitats across South America, depending on the region. These habitats include tropical and subtropical forests, savannas, and scrublands.

The species is known to be highly adaptable, and as such, it has been able to successfully invade non-native habitats, such as agricultural landscapes and urban areas in places where they have been introduced.

In their natural habitats, Thectocercus acuticaudatus forms large flocks to forage and rest.

They prefer woodland habitats and areas with large trees, as this provides them with a good source of food and shelter to roost overnight. In some regions, pairs of Blue-crowned Parakeets may also use unoccupied bird cavities to provide a nesting site.

Movements and Migration

Blue-crowned Parakeets are non-migratory species and tend to exhibit sedentary behavior. However, there are some instances where they may move to another location.

Populations that breed in regions where annual rainfall is reduced may shift their distribution towards areas with higher rainfall in search of resources. In times of scarcity, these birds have the capacity to travel long distances to find food elsewhere.

The introduction of Thectocercus acuticaudatus outside its native range has resulted in population movements and extensions. In particular, in Florida, the species has been introduced and subsequently established, where it has evidenced a range expansion into new habitats.

The movement of this species to new regions could alter ecosystems, impact other bird species negatively, and lead to a loss of biodiversity through competition for food and other resources. Threats to

Habitat and Movements

Blue-crowned Parakeets face several threats to their habitat and movements.

The first significant challenge is habitat loss, which results from the clearing of forests, agricultural activities, deforestation, and urbanization. The destruction of these natural habitats can lead to the displacement of regional populations and limit their capacity to move to more suitable environments.

In addition, habitat fragmentation and degradation can lead to the isolation of certain populations. As a result, this can lower population density density, altering their genetic composition and leading to decline in individuals in diminishing population.

The introduction of non-native species that displace these birds from their natural habitats, for example, animals that feed on them or compete with them for food, also poses a significant threat. These non-native species can disrupt or destroy breeding sites, nesting grounds, and feeding grounds.

Finally, illegal trade in Blue-crowned Parakeets poses a real threat to their survival by reducing populations in specific regions. The illegal trade is usually directed towards the pet trade, where demand for attractive bird species remains high.

Trapping and hunting of Blue-crowned Parakeets can lead to excessive pressure on their population and, in the worst-case scenario, lead to population collapse.


There are several conservation efforts aimed at preserving Thectocercus acuticaudatus populations and habitats. These efforts include habitat restoration and reforestation programs, strengthening of legal frameworks to protect these birds and their habitats, and raising awareness on the importance of these bird species.

In addition, conservationists are researching the impacts of introduced populations and the potential consequences of their expansion into new territory. Measures are being taken to control and manage these invasive populations to minimize negative impacts on the native flora and fauna.

Due to its status as a species of least concern, Thectocercus acuticaudatus is not currently listed on any major conservation organization’s red list. However, habitat loss and alteration, illegal activities, and introduction to non-native areas remain significant threats.

Therefore, continued monitoring of their populations and efforts to preserve their habitats are critical to ensure the preservation of this species.


The Blue-crowned Parakeet is a charming parrot species found in diverse habitats across South America. Although non-migratory, they can move location in search of new resources in times of scarcity.

However, habitat loss, fragmentation, the introduction of non-native species, and illegal trade threaten their survival. Therefore, in order to conserve this species, continued monitoring, research, and conservation measures are required to protect their habitats and populations.

Diet and Foraging


The Blue-crowned Parakeet is primarily herbivorous, and their diet consists mainly of seeds, nectar, fruits, insects, and flowers. These birds are known for their foraging behavior where they search for food in groups that vary in size.

Blue-crowned Parakeets are active during the day, and they use their beaks to pick fruits, flowers, and seeds from trees and grasslands.


The diet of Blue-crowned Parakeets varies depending on the region and the season. During the breeding season, they are known to consume mainly protein-rich food such as insects and caterpillars.

In contrast, during non-breeding seasons, their diet is more focused on fruit and seed consumption.

Metabolism and Temperature Regulation

The Blue-crowned Parakeet has a high metabolism rate, which enables it to rapidly digest food and convert it into energy. They maintain a high body temperature of around 40C and thermoregulate through panting and evaporative cooling.

In hot climates, they seek shelter in the shade to cool off and avoid overheating.

Sounds and Vocal



The Blue-crowned Parakeet is known for their vocalizations, which are complex and varied.

These birds are capable of producing various calls, screeches, and squawks, which they use to communicate with each other over long distances.

Blue-crowned Parakeets use these vocalizations for various reasons, such as maintaining social cohesion within the flock, recognizing their mates, and alerting other flock members to the presence of predators.

The birds have been known to learn new sounds and mimic other bird species, as well as the sounds they hear from their environment.

In addition to vocalizations, Blue-crowned Parakeets also engage in physical displays as a means of communication.

During courtship, males will often display their crown feathers as a sign of their interest in a female mate. The birds also engage in synchronized movements and flight patterns during flock-wide display behaviors, which helps to maintain social relationships within the flock.

Threats to

Diet and Sounds

The diet of Blue-crowned Parakeets and their foraging behavior makes them vulnerable to habitat loss and fragmentation. Deforestation, logging, and agricultural activities contribute to significant changes in the natural habitat, leading to food scarcity and limiting foraging opportunities.

In addition, the introduction of non-native species, such as rats and other animals that feed on the birds and their eggs, can pose a significant threat to their survival. Blue-crowned Parakeets’ vocalizations, while vital for their social organization and communication, also pose a threat when these birds have been captured and become domesticated.

The birds are known to mimic sounds from their environment, including household noises, and this can cause a disturbance to their owners or neighbors.


Conservation efforts aimed at protecting the Blue-crowned Parakeet’s habitat and diet are vital to ensuring their survival. Creating legal frameworks that protect their habitats, promoting sustainable development practices, and educating the public about the importance of these birds can help mitigate the threats to their diet and habitat.

In addition, monitoring and controlling the introduction of non-native species and working to prevent illegal trade in the birds can help to maintain healthy populations.


The Blue-crowned Parakeet is a charismatic bird species that is well known for its diet, foraging behavior, and vocalizations. Their primary diet consists of fruit, seeds, and insects.

These birds have a complex vocal repertoire which helps them to communicate with each other.

Conservation efforts are needed to protect their habitats, diet, vocalizations, and social relations. These measures can guarantee their presence for future generations to observe and appreciate their beauty and lively personality.



The Blue-crowned Parakeet is highly active and is known for its hyperactive, erratic flight. When in flight, they soar rapidly from tree to tree, using their wings to create a flapping sound.

These birds are also adept climbers and can navigate trees and branches with ease.

Self Maintenance

The Blue-crowned Parakeet is a meticulous bird when it comes to self-maintenance. They use their beaks to preen their feathers, removing any dirt or debris to maintain their plumage’s condition.

They also take frequent baths and use water to clean their feathers thoroughly. Agonistic


Blue-crowned Parakeets engage in agonistic behavior, which includes aggressive physical displays and vocalizations to defend territories against intruders.

During these displays, birds will puff up their feathers, extend their wings and tail, and engage in physical jousting with their beaks. Sexual


Blue-crowned Parakeets are socially monogamous and form strong, long-term pair bonds.

Social monogamy means that they form a long-term social relationship with one partner, but they may engage in extra-pair copulations (EPCs). Blue-crowned Parakeets engage in elaborate courtship rituals that involve displaying their crowns and producing complex vocalizations.


The Blue-crowned Parakeet reaches sexual maturity at about 2 to 3 years of age. The breeding season varies depending on the region in which they live, but it is generally between October and March.

During this time, individuals form monogamous pairs and can lay between 2 to 4 eggs.

The incubation period lasts between 24 to 27 days, with both parents taking turns to incubate the eggs.

After hatching, the chicks are completely dependent on the parents, and they are fed a diet of regurgitated food for approximately six weeks until they fledge.

Demography and Populations

The Blue-crowned Parakeet is widely distributed in South America, and population size differs regionally. While there are no current estimates for the global population size of this bird, populations are stable, and they are listed as a species of least concern by the International Union for

Conservation of Nature (IUCN).

Nevertheless, localized population declines occur due to habitat loss, fragmentation, and collection for the pet trade.

These local population reductions can have long-lasting consequences for the genetic and demographic makeup of the species. Invasive species and overexploitation can also contribute to the decline of Blue-crowned Parakeet populations.


Efforts aimed at conserving the Blue-crowned Parakeet primarily focus on habitat conservation and sustainable management. These efforts include policy interventions, enforcing legal frameworks, and habitat restoration in areas with fragmented or destroyed habitats.

Researchers and conservationists are monitoring population trends and demographics and identifying potential threats to the survival of this species.


The Blue-crowned Parakeet is a fascinating bird species, characterized by its complex behavior, including its locomotion, self-maintenance, and aggressive and courtship displays. While

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