Laumer, I. B. http://orcid.org/0000-0002-1597-0072
Jelbert, S. A.
Taylor, A. H.
Rössler, T.
Auersperg, A. M. I.
Funding for this research was provided by:
FWF (P29075)
WWTF (CS 18-023)
Austrian Science Fund
Article History
Received: 28 April 2020
Revised: 17 September 2020
Accepted: 18 September 2020
First Online: 28 October 2020
Compliance with ethical standards
:
: All the authors declare that they have no conflict of interest.
: All subjects are permanently housed together in a large, enriched aviary with indoor and outdoor area (ca. 200 m<sup>2</sup> ground space, up to 6 m high) at the Goffin Lab associated to the University of Veterinary Medicine (Vienna, Austria). All parrots are kept on ad libitum diet (boiled and raw seeds, fresh and dried fruits, boiled vegetables, fresh water) and participate in the experiments on a voluntary basis. As all experiments were appetitive, non-invasive and based exclusively on behavioural tests, they are not classified as animal experiments under the Austrian Animal Experiments Act (§ 2. Federal Law Gazette No. 501/1989). All animals had CITES certificates and were registered at the district’s administrative animal welfare bureau (Bezirkshauptmannschaft St. Pölten Schmiedgasse 4–6, A-3100; St. Pölten, Austria). These housing conditions comply with the Austrian Federal Act on the Protection of Animals (Animal Protection Act—§ 24 Abs. 1Z1 and 2;§25Abs.3—TSchG,BGBl.INr.118/2004Art.2).