<prompt> tafadhali geuza maudhui haya ya swahili kwenda kwa kiingereza.idadi yao imepungua tangu karne ya 19 kutokana na utegaji, upunguzaji wa eneo na kuvunjavunja makazi yao, hivi kwamba huwa hawapatikani kabisa mwishoni mwa kusini mwa eneo lao la ulaya.  <response>: their populations have experienced a steady decline since the 19th century in the face of trapping, range reduction and habitat fragmentation, such that they are essentially absent in the southern end of their european range and are quite rare in the continental united states. 