Table 2 The ravens.

Table 2 provides information about the tested birds (name, sex, and sibling group named after their origin).

Individual	Sex	Sibling Group (Origin)
Arthus	Male	Zoo Altenfelden
Aramis	Female	Zoo Altenfelden
Maxi	Female	Wild Park Bayrischer Wald
Moritz	Male	Wild Park Bayrischer Wald
Rhea	Female	Vogelpark Walsrode
Munin	Female	Vogelpark Walsrode
Bonny	Female	Zoo Wels
Clyde	Male1	Zoo Wels

¹Individual stopped participating during the second set of experiments and was not tested further.