▁T av annes ▁valley . ▁ ▁It ▁consists ▁of ▁the ▁village ▁of ▁Re con vil ier ▁and ▁the ▁ham let ▁of ▁Ch ain don . ▁ ▁On ▁ 3 1 ▁December ▁ 2 0 0 9 ▁District ▁de ▁M out ier , ▁the ▁municipality ' s ▁former ▁district , ▁was ▁dissol ved . ▁ ▁On ▁the ▁following ▁day , ▁ 1 ▁January ▁ 2 0 1 0 , ▁it ▁joined ▁the ▁newly ▁created ▁Arr ondissement ▁administr atif ▁J ura ▁b ern ois . ▁ ▁Co at ▁of ▁arms ▁The ▁bla zon ▁of ▁the ▁municipal ▁coat ▁of ▁arms ▁is ▁Argent ▁a ▁B end ▁w avy ▁S able ▁and ▁in ▁chief ▁sin ister ▁a ▁Mul let ▁of ▁Five ▁of ▁the ▁same . ▁ ▁Dem ograph ics ▁ ▁Re con vil ier ▁has ▁a ▁population ▁() ▁of ▁. ▁ ▁, ▁ 1 6 . 1 % ▁of ▁the ▁population ▁are ▁resident ▁foreign ▁national s . ▁ ▁Over ▁the ▁last ▁ 1 0 ▁years ▁( 2 0 0 1 - 2 0 1 1 ) ▁the ▁population ▁has ▁changed ▁at ▁a ▁rate ▁of ▁- 2 . 3 %. ▁ ▁M igration ▁account ed ▁for ▁- 2 . 7 %, ▁while ▁birth s ▁and ▁death s ▁account ed ▁for ▁- 0 . 2 %. ▁ ▁Most ▁of ▁the ▁population ▁() ▁speak s ▁French ▁( 1 , 9 9 9 ▁or ▁ 8 2 . 7 %) ▁as ▁their ▁first ▁language , ▁German ▁is ▁the ▁second ▁most ▁common ▁( 1 6 6 ▁or ▁ 6 . 9 %) ▁and