Figure 1: Diagram showing the order of Psittaciformes in the classification drawn up by the IOC
In this memoir, we will preferably use the systematics developed by the IOC.
Accuracy, although the scope of our study is limited to Psittacids, we may sometimes
mention birds belonging the other families of Psittaciformes. Indeed,
clinical considerations do not vary between these families and some species (such as Eclectus
(Eclectus roratus) or Callopsittes (Nymphicus hollandicus) for example) are sometimes considered
as belonging to the family Psittacidae according to the classification used.
Common characteristics of Psittaciformes
Psittaciformes are recognizable birds at first glance thanks to some characteristics that can be phenotypic, grouped in Table 1
Table 1: Presentation of the common characteristics of Psittaciformes.