 Outside of densely populated areas there is normally around a 5\% drop in sleep duration for Great Tits' females during their nesting period.
<fluency>  Outside of densely populated areas there is normally around a 5\% drop in sleep duration for Great Tits' females during their nesting period.
 Outside densely-populated areas, there is normally around a 5\% drop in sleep duration for Great Tits' females during their nesting period.