It also shows that a serious crime leads to a serious sentence," said prosecutor Christer Jarlas, who had argued for 2 years in prison. According to Jarlas, the man's aviary obsession began as a simple hobby before spiralling out of control. He argued the man should be sentenced to two years in prison. "That is the penalty for this kind of aggravated crimes," said Jarlas to news agency TT prior to the verdict. The 40-year-old is believed to have been hunting and catching birds since January 2005 until being caught in June 2010. He is also suspected of taking eggs and baby birds from nests. The man kept an extensive database which included notes of the 13,983 birds and eggs collected.