Helen Hays
... that over the course of 45 years of conservation work by ornithologist Helen Hays , the tern population of Great Gull Island increased tenfold?
... that over the course of 45 years of conservation work by ornithologist <b id="mwCHo"><a href="./Helen_Hays" id="mwCHs" rel="mw:WikiLink" title="Helen Hays">Helen Hays</a></b> <i id="mwCHw">(pictured)</i>, the <a href="./Tern" id="mwCH0" rel="mw:WikiLink" title="Tern">tern</a> population of <a href="./Great_Gull_Island" id="mwCH4" rel="mw:WikiLink" title="Great Gull Island">Great Gull Island</a> increased tenfold?