 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 of densely populated areas there is normally about a five-percent drop in sleep duration for Great Tits' females during their nesting period.