Table 1. Behavioural ethogram of the study.

For each behavioural category collected in the study the table reports the name and definition.

Behavioural categories
Agonistic behaviour	During nesting, a flamingo extends the neck and peck at another bird or performs threatening displays, particularly neck hooking and swaying (Studer-Thiersch, 2000; Johnson & Cézilly, 2009) and feather spreading (Schmitz & Baldassarre, 1992). Agonistic behaviour can be performed when the flamingo is near the nest and on the nest (both standing and sitting).
Incubation	A flamingo is incubating the egg, keeping it warm with the body heat. This behaviour is performed when the flamingo is sitting on the nest.
Comfort behaviour	A flamingo is self-preening (trimming or dressing the own feathers with the beak), stretching (drawing out/extending legs or wings) or scratching the neck with one leg (Studer-Tiersch, 1975; Brown & King, 2005). Comfort behaviour can be performed when the flamingo is near the nest and on the nest (both standing and sitting).
Egg care	A flamingo is looking at the egg or rolling and moving the egg carefully (Studer-Tiersch, 1975; Brown & King, 2005), to assure even heating or cooling and prevent embryonic malformation (Hauber, 2014). Egg care can be performed when the flamingo is standing on the nest.
Nest-building	A flamingo looks for mud, soil and sand and picks them up to renovate or repair the nest (Studer-Tiersch, 1975; Brown & King, 2005). Nest-building can be performed when the flamingo is sitting on the nest.
Sleeping	A flamingo rests with the head under the wing. Sleeping can be performed when the flamingo is near the nest or sitting on the nest.
Other	A flamingo performs a behaviour that is not directly associated with parental care and is not listed above. This behavioural category can be performed when the flamingo is near the nest.