Editing Psittacus (section)

===Illness and disease===
<!-- To discuss illness and diseases -->
The grey parrot (''Psittacus erithacus'') has been known at times to contract a non-infectious inflammatory lung disease called lipid pneumonia. Lipid pneumonia can be classified as exogenous or endogenous depending on whether or not the animal inhaled outside material.  A necropsy shows that the lungs of a grey parrot with endogenous lipid pneumonia (EnLP) are firm with a diffuse grey discoloration.  EnLP is a common illness in other animals as well.<ref>{{cite journal|last=Costa|first=T |display-authors=etal |title=Endogenous Lipid Pneumonia in an African Grey Parrot (Psittacus erithacus erithacus)|journal=Journal of Comparative Pathology|date=Aug–Oct 2013|volume=149|issue=2–3|pages=381–384|doi=10.1016/j.jcpa.2013.01.008|pmid=23582929}}</ref> The grey parrot is also one of the three parrots that scientists found to commonly suffer from dehydration.  Scientists have used plasma osmolality to find more information about the form of dehydration grey parrots have.<ref>{{cite journal|last=Beaufrere|first=Hugues |display-authors=etal |title=Plasma Osmolality Reference Values in African Grey Parrots (Psittacus erithacus erithacus), Hispaniolan Amazon Parrots (Amazona ventralis), and Red-fronted Macaws (Ara rubrogenys)|journal=Journal of Avian Medicine and Surgery|date=June 2011|volume=25|issue=2|pages=91–96|doi=10.1647/2010-015.1|pmid=21877445|s2cid=33399471 }}</ref> Another disease that the grey parrots get is cardiomyopathy, which is a heart disease usually presented at a young age. The cause is having parents of the same breed. Some other common symptoms in these birds are weakness, coelomic cavity, and retardation.<ref>{{cite journal|last=Juan-Salles|first=c |display-authors=etal |title=Congestive Heart Failure in 6 African Grey Parrots (Psittacus e erithacus)|journal=Veterinary Pathology|date=May 2011|volume=48|issue=3|pages=691–697|doi=10.1177/0300985810377071|pmid=20660943|s2cid=25359919 }}</ref> The grey parrot has been known to contract beak and feather disease virus (BFDV) which causes a highly contagious, and sometimes fatal, psittacine beak and feather disease in parrots.<ref>{{cite journal|last=Julian|first=Laurel|title=Extensive recombination detected among beak and feather disease virus isolates from breeding facilities in Poland|journal=Journal of General Virology |year=2013|volume=94|issue=Pt 5|pages=1086–1095|doi=10.1099/vir.0.050179-0|pmid=23324468|hdl=10566/3381|doi-access=free|hdl-access=free}}</ref> In a PCR-based study, Chlamydiosis, an infectious disease of avians, was found to infect the grey parrot. In the study 253 clinical samples were taken from 27 bird species belonging to seven orders. Thirty-two (12.6%) samples were positive for Chlamydi and two new genotypes were discovered: ''Chlamydophila psittaci'' and ''Chlamydophila abortus''.<ref>{{cite journal|first1 = S. A.|last1=Madani|first2=S. M.|last2=Peighambari|title = PCR-based diagnosis, molecular characterization and detection of atypical strains of avian ''Chlamydia psittaci'' in companion and wild birds|journal=Avian Pathology |date=Feb 2013 |volume=42 |issue=1 |pages=38–44 |doi=10.1080/03079457.2012.757288|pmid=23391180|url=https://www.researchgate.net/publication/235421237|access-date=26 October 2015|doi-access=free}}</ref>
Another ailment that grey parrots commonly suffer from is hypocalcemic-induced seizure activity. Birds between 2–15 years of age contract it, due to a lack of calcium. A symptom of the syndrome can be unsteadiness while standing or falling off a perch along with neurological anomalies or problems.<ref>{{cite journal|last1=Kirchgessner|first1=Megan|first2=Thomas N. |last2=Tully Jr |first3=Javier |last3=Nevarez |first4=David Sanchez-Migallon |last4= Guzman |first5=Mark J. |last5=Acierno|title=Magnesium Therapy in a Hypocalcemic African Grey Parrot (Psittacus erithacus)|journal=Journal of Avian Medicine and Surgery|date=March 2012|volume=26|issue=1|pages=17–21|doi=10.1647/2009-021.1|pmid=22645835|s2cid=22315895}}</ref>