. 2018 Sep 4;6:e5436. doi: 10.7717/peerj.5436

Table 3. Behaviours of the Northern bald ibis described in previous research.

Behaviours have been grouped in four main groups and the number of behaviours per group was used to develop indices of the ibis behavioural variety in the study flock. The possible score for each group is calculated starting from the number of behaviours that have been previously described in the Northern bald ibis and in close relative species (Geronticus calvus).

Routine b. (B)	Exploration/Attention b. (E)	Comfort b. (C)	Social b. (S)
Flight^a^,^g	Probing ground^a^,^e^,^g	Preening & scratching^a^,^g	Agonistic display^a^,^d
Walking^g	Probing vegetation^g	Bathing^a	Aggression^a^,^e^,^g
Resting^a	Manipulation/Play^b	Sun bathing^a	Preening^a^,^b^,^c^,^e^,^f
Defecation^a	Attentive behaviourⁱ		Greeting (sweeping head movements)^a^,^b^,^c^,^d^,^e
Eating (food from zookeeper)/drinking^g	Alertness^h		Anti-predatory (mobbing)^a
Possible score: 0–5	Possible score: 0–5	Possible score: 0–3	Possible score: 0–5

Notes.

Kopij (1998).

Mark (2007).

Clark et al. (2012).

Pegoraro & Föger (2001).

Hirsch (1979).

Frigerio et al. (2016).

Vargas-Ashby & Pankhurst (2007).

Moulton et al. (2013).

ⁱ

Fernández-Juricic (2012).