Titti Olsson, Östbyn, and Arnold Johansson, Långliden, were those who showed an interest. Arnold (82) has been a forester and biologist hobby, accommodation in the same place, since childhood. I visited him in April 2016 and lent his nature diary. He has noted 20 vårfåglars first arrival date in Långliden between 1951-2011. 60 year notes will be science Mellannorrland and Sweden. Here we can see how the singing lark, Lapwings become rarer / later and that, instead, are the blackbird and chaffinch first in Liden during spring now. Arnold's diary has been submitted to the Administrative Board and the Swedish Species Information Center (SLU in Uppsala).
ឥឡូវត្រឡប់សត្វស្លាប migratory, ពួកគេគឺជា 10 ដងច្រើនជាងយើងមានក្នុងអំឡុងពេលរដូវរងារនៅក្នុងដីរបស់យើង. ដំបូងឡើងគឺ blackbird ឥឡូវនេះ. វាគឺជាការ Titti និងJörgen Olsson, Östbyn, បានរាយការណ៍ថាជាលើកដំបូង; 12/3. ក្រោយមកមួយសប្តាហ៍ផងដែរថាពួកគេបានបង្ហាញ chaffinch. មានការតភ្ជាប់អាហារបក្សីក្នុងតំបន់នោះទទួលបានការvårbesökenដំបូងគឺ. នៅទីនេះនៅ Navarn (300 MOEH) វាមិនមែនរហូតដល់ 19/3 មុនពេល blackbird លើកដំបូងបានមក.