binominal data in mixed linear models

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    Help needed analysing the effect of communal breeding on predation events (binomial data in mixed models) ?

    The research question I am dealing with is as follows: Do bird nests with helper individuals (in addition to the parents) have a decreased risk of predation? I have observation-data of bird nests (European bee-eaters), including if helpers were present (yes/no)/ if predation events happen...