Hybrid macaw

The hybridization of macaws in the wild is less common than in captivity due to natural barriers and mating behaviors, although a few rare cases have been recorded. One example was the natural hybridization of a Spix's and Illiger's macaw recorded in Conservation Genetics (2001), which demonstrated two species of macaws producing offspring. This discovery created a major breakthrough in the preservation of this species and macaws as a whole as it is understood that the Spix's macaw may now be fully extinct in the wild.

The hybridization of macaws is usually due to the placement of multiple macaw species in the same enclosure. Breeders may choose to pair different species to intentionally produce hybrid offspring, or the parrots themselves may select such a partner due to a lack of a suitable conspecific of the opposite sex. Due to the rising interest in hybrid macaws in the exotic-pet trade, production has increased. Their distinct coloring makes them highly sought after by competitive and exotic-bird breeders and traders.[6] They are also bred for their "pet quality" and personality traits which results from the mixing of two species of birds. One example is the hybridization of the Catalina macaw, which is bred for its intelligence and ability to respond to training, and the harlequin macaw, bred for its relaxed and calm personality. Although, behavior, temperament and coloring can vary from each hybrid.

Recently there has been an over abundance of female blue-and-yellow macaws in captivity, and they have been highly hybridized.

Some bird breeders consider intentionally breeding hybrid macaws, particularly endangered species, to be unethical - as to do so is to dilute bloodlines and potentially produce hybrids that appear to be identical to a parent species, yet contain genes from a supposedly separate species. This may prove to be detrimental to conservation efforts if the day ever comes when (as occurred with the Spix's macaw) captive macaws are required to maintain the existence of a pure species.[7][8]

Hybrid macaws bred in captivity, despite having little conservation value in themselves, have successfully been used in zoological settings as surrogate parents for the eggs and chicks of endangered macaw species, successfully rearing the offspring without human intervention.[9] In addition, a 2021 study exploring the use of free flight techniques developed by aviculturists and adapting these with the potential goal of returning captive-bred parrots to the wild featured several hybrid macaws as experimental participants.[10]