The phrase "alien behaviour" is correct and usable in written English.
It can be used to describe actions or conduct that are strange, unfamiliar, or not typical for a particular context or culture.
Example: "The scientist noted the alien behaviour of the newly discovered species, which did not conform to any known patterns of animal interaction."
Alternatives: "unusual conduct" or "strange actions".
"The Alien's behaviour is at the core of the game," Hope continues.
For this to work we couldn't choreograph the Alien's behaviour.
Stanley G. Weinbaum won immediate and lasting acclaim with his more sophisticated approach in A Martian Odyssey (1934), which presented aliens whose behaviour, though whimsical, harmless, and colourful, was profoundly inexplicable to human mentality.
Stilted and strange though the alien's speech and behaviour continue to be, Martin's wife and teenage son spot hardly any difference from the original, save for some hilarious efforts to match the son's swearing and the suspicious way he bothers to put his used crockery in the dishwasher.
Brazil has new stadiums opening up and down the country, and there are fears, explicitly voiced on a radio show I did last week, that the country might be over-reaching itself by attempting to import an alien culture of fan behaviour.
One study used the Frontal Behavioural Inventory to define a 'high frontality' AD group based on the presence of frontal symptoms such as apathy, aspontaneity, loss of empathy (negative symptoms) and disinhibition, utilization behaviour, and alien limb phenomenon (positive symptoms) [ 40].
Furthermore, it has been noted that the problem with AHS patients is to control their action, while with a schizophrenic patient it is a problem with awareness of the action (an AHS patient tries to prevent abnormal behaviour of the alien hand by the good hand after it executed the action) [38].
We first consider certain well-known neurological conditions (Anarchic Hand Syndrome, Alien Hand Syndrome and Utilisation Behaviour) which are characterised by relatively well-demarcated disruptions before considering the more global deficits characteristic of schizophrenia.
By creating highly simplified artificial "aliens" and comparing their development and behaviour to real biology, it is often possible to discover something of life's essential character.
The method of the translator must be to correlate dispositions to verbal behaviour with events in the alien's environment, until eventually enough structure can be discerned to impose a grammar and a lexicon.
