He was the main illustrator of the Spanish well known nature film maker and writer Felix Rodriguez de la Fuente.
In 1986, Varela was appointed as Director of the Spanish Ornithological Society a post that he occupied until 1990 when he started to dedicate more time to art, eventually making of this a full-time job.
As an active Council member he participated in the organization of international symposium and congress in Spain, Italy and Tunisia.
His paintings have been exhibited in galleries and museums of UK, the Netherlands, France, Spain, Portugal and USA, and his work was selected by the jury of the Birds in Art show at the Leigh Yawkey Woodson Art Museum, (Wausau, Wisconsin) that holds some of his paintings in its permanent collection.
[3] A great part of his paintings are produced on site, through direct observation of animals in their environment, but the studio work is also based on field sketches.