 For example, biologist Thomas Raap conducted a study that suggested exposure to ALAN affected the sleep behavior of great blue tits (Cyanistes caeruleus).
<fluency>  For example, biologist Thomas Raap conducted a study that suggested exposure to ALAN affected the sleep behavior of great blue tits (Cyanistes caeruleus).
 For example, biologist Thomas Raap conducted a study which suggested that exposure to ALAN affected the sleep behavior of great blue tits (Cyanistes caeruleus).