In pictures: Murmuration of starlings near GretnaPublished26 November 2013Shareclose panelShare pageCopy linkAbout sharingImage caption, Starlings have been gathering in huge numbers over the village of Rigg near Gretna, producing dramatic patterns in the skyImage caption, The weight of starlings on power lines in the area caused some localised problems with power suppliesImage caption, The birds gather each day, in what is known as a murmuration, when they fly and swoop in unison before finding a place to roost for the nightImage caption, Numbers of starlings increase at this time of year when migrating birds from Europe join flocks in the UK because of the milder climateImage caption, The best time to see the wildlife display is just before dusk, when the flying formations can last for more than 15 minutesImage caption, The number of birds over Gretna has been estimated at tens of thousands and is one of the biggest murmurations in the UK