Our geese make noise at night too, in fact its 4:20 am and they are talking now lol. They change up where they sleep sometimes, but it is typically by the pond. If there is a predator or an intruder, you will know it. They will freak out and all of them will scream so loud that it will wake the dead. They used to use domestic geese in wars because the birds would "warn" soldiers if the enemy came around. They are watchdogs and will scream loudly if there is a problem. They are also noisy if they mate or if there is a jockeying for position among the male geese. They fight a lot in Spring. If there was a problem, you would know it. They are just noisy fellas