Date: 1965 Size: 8in x 16in Material: Pencil on paper The sketches were made when I was about 16. They were based on a dead bird that I found, which I wired into a lifelike pose.

Date: 1974 Material: Watercolour on paper

Date: 1974 Size: 26in x 39in Material: Oil on canvas A pair of Spotted Harriers from Australia fighting over a snake.

Date: 1974 Size: 27.5in x 39in Material: Watercolour

Date: 1976 Male and female Nankeen Kestrels from Australia.

Date: 1977

Date: 1978

Date: 1978 Male and female pheasants in the snow was painted when Tell and Eileen lived and worked on a farm in Kent. One of the farm hands used to shoot game and brought back a couple of pheasants, which Tell used to compose this painting.

Date: 1980 Size: 12in x 16in Material: Watercolor on paper At the time, I was living in a caravan while working on a farm in Norfolk. A worker called in with a Tawny Owl that he found dead on a road. Because Eileen and our children were visiting her parents for Christmas, I was able to establish a setup within the caravan that allowed me to sketch and paint the owl over a few days.

Date: 1980 Size: 20in x 14in Material: Watercolor on paper This image is a painting of pheasants based on clay models that I created in my studio. I developed an unusual technique for the painting, working with only one color but with different strengths of pigment. The lightest pigment was applied first to the whole painting and allowed to dry. The next lightest pigment was then applied in the same way, followed progressively by darker and darker layers of pigment until the background was completed. I used this technique also for the Tawny Owl painting. I don’t know of anyone else who has worked this way; I really enjoyed the process and seeing the result.

Date: 1983 Size: 20in x 28in Material: Egg temerpa on a gessoed panel A surrealistic depiction of a Red-Billed Toucan; the sequence of images is depicted on a single panel.

Date: 1983 Size: 16in x 30in Material: Egg tempera on gessoed canvas The model for this painting was a dead Tawny Owl; different images of the owl are depicted from three angles. Because the head was badly damaged, I created a clay model of the head, inserting bronze-colored beads from a necklace to help depict the eyes, giving the owls a demon-like appearance. The initial painting of the mouse was removed and repainted; the first depiction, with the mouse cowering down, came across as too sad.

Date: 1984 Size: 16in x 12in Material: Egg tempura on gessoed panel

Date: 1984 Size: 16in x 12in Material: Egg tempura on gessoed panel

Date: 1984 Size: 16in x 12in Material: Egg tempura on gessoed panel

Date: 1987 Size: 16in x 12in Material: Egg tempera on gessoed panel On a frosty morning in Norfolk (February 1987), I was out hawking with Rowan and the goshawk. Rowan put up a duck out of a frozen pond, which the goshawk immediately went after. But in front of the pond was a reed bed out of which popped up a Long-eared Owl. The goshawk changed direction and grabbed the owl, but both fell down on the ice. I had to wade through the water, breaking ice, to reach the birds. Neither appeared damaged apart from a few crumpled feathers. I put the owl into my falconry bag and took it home to check that it hadn’t been damaged. I phoned a friend, an RSPCA inspector, who advised me to keep the bird for a few days to make sure it wasn’t injured. I temporarily placed the bird in a shed with blacked-out windows. Over the next few days, I sketched the owl, using this as the basis for the painting. I then released the bird back where I had found it.

Date: 1988 Size: 30in x 20in Material: Oil on canvas

Date: 1991 Size: 15in x 20in Material: Oil on canvas

Date: 1993 Size: 20in x 30in Material: Oil on canvas A pair of Whooper Swans seen at Fountains Abbey, Yorkshire, England in 1992

Date: 1993

Date: 2009 Size: 12in x 18in Material: Oil on canvas The eerie call of the Common Loon or Great Northern Diver (Gavia immer), is said to capture the spirit of the northern wilderness. During the breeding season, loons live on lakes in Canada, the northern United States and the southern areas of Greenland and Iceland.

Date: 2009 Size: 31.5in x 55in Material: Oil on canvas Vultures are another species that have been a passion of mine; at the age of 19, I travelled to India to study them. California Condors (Gymnogyps californianus) are the largest flying birds in the USA. Through the efforts of conservationists, they were brought back from the brink of extinction and can now be seen, once more, flying over Grand Canyon.

Date: 2010 Size: 28in x 52in Material: Oil on canvas The individual ducks were first photographed at the Slimbridge Wetland Centre in the UK. I then traveled around Cooks County in Illinois looking for a suitable background as the setting for the painting. The log, found floating in the water, provided the ideal perch for painting the ducks in different poses.

Date: 2013 Size: 36in x 60in Material: Oil on Canvas "The Stand Off"

Date: 2013 Size: 24in x 36in Material: Oil on canvas This iconic flightless bird (Raphus cucullatus) has been extinct since 1662. It was endemic to the island of Mauritius in the Indian Ocean. My painting is the result of a fresh look at the historic accounts and physical remains.

Date: 2014 Size: 30in x 60in Material: Oil on canvas Cassowaries have always been a passion of mine, ever since I kept one back in my zoo days. The image depicts an Australian Cassowary, also known as the Southern Cassowary (Casuarius casuarius). The painting shows a male bird from the northeast of Australia caring for his brood of chicks.

Date: 2015 Size: 20in x 24in Material: Oil on canvas Eider Ducks (Somateria mollissima) are one of my favourite species. They are found all around the Arctic Circle in countries such as Iceland, Greenland, Norway, Siberia, and Canada; they are also found further south in European countries such as Denmark, England and Scotland. They are coastal ducks that dive to search for food on the seabed and feed chiefly on blue mussels and other shellfish. To capture the details for the foreground of the painting, I created a mock-up model of a beach in the studio, complete with pebbles, sand and mussel shells.

Date: 2017 Size: 16in x 24in Material: Oil on canvas The Canvasback Duck (Aythya valisineria) is the largest diving duck in North America and is often referred to as the "aristocrat of ducks". In addition to their diving, they are known for their flight speed and the large, close gatherings they form, like rafts on the water during winter.

Date: 2023 Size: 12in x 16in Material: Oil on canvas I used to work in zoos many years ago, and I actually kept several species of toucans and toucanets. These colorful birds have always fascinated me.