Dr William Eagle Clarke ISO FLS FRSE PBOU LL.D.
He was originally a civil engineer and surveyor, but later took up natural history as a profession.
He was instrumental in recognizing that lighthouses and lightships were capable of collecting a great deal of migration information.
[1] In 1903 he was elected a Fellow of the Royal Society of Edinburgh his main proposer being Ramsay Heatley Traquair.
[3] Media related to William Eagle Clarke at Wikimedia Commons