Author: David Mathre

I am a scientist by training (Eckerd College, BSc; Caltech, Ph.D.). I worked for 27 years as a Chemist in the Pharmaceutical Industry developing processes to manufacture medicines for human and animal health. I now spend my time as a photographer and world traveler. My interests include the natural world, wildlife, landscapes, sky, and seascapes, travel, and astrophotography. I look for unique ways of viewing the world and presenting my images. I have traveled to over 55 countries in six continents, often on Semester at Sea voyages. While at home in New Jersey, I spend time on home renovation and expansion of a wildflower garden/meadow.

Sunday (21-July-2013) — New Jersey

Backyard Summertime Nature in New Jersey.

Doe with a Tumor on Her Neck (Papilloma Virus?). Image taken with a Nikon D4 camera and 80-400 mm VRII lens (ISO 200, 400 mm, f/5.6, 1/400 sec).

Doe with a Tumor on Her Neck (Papilloma Virus) - Backyard Summer Nature in New Jersey. Image taken with a Nikon D4 and 80-400 mm VRII lens (ISO 200, 400 mm, f/5.6, 1/400 sec). (David J Mathre)
Doe with a Tumor on Her Neck (Papilloma Virus) – Backyard Summer Nature in New Jersey. Image taken with a Nikon D4 and 80-400 mm VRII lens (ISO 200, 400 mm, f/5.6, 1/400 sec). (David J Mathre)

Thursday (18-July-2013) — New Jersey

Backyard Summertime Nature in New Jersey.

Back Side of Sycamore Leaves in Early Morning Light. Image taken with a Nikon D800 camera and 600 mm f/4 VR lens (ISO 160, 600 mm, f/4, 1/500 sec).

Back Side of Sycamore Leaves in Early Morning Light. Image taken with a Nikon D800 and 600 mm f/4 VR lens (ISO 160, 600 mm, f/4, 1/500 sec). (David J Mathre)
Back Side of Sycamore Leaves in Early Morning Light. Image taken with a Nikon D800 camera and 600 mm f/4 VR lens (ISO 160, 600 mm, f/4, 1/500 sec). (David J Mathre)

Wednesday (17-July-2013) — New Jersey

Summertime Nature in New Jersey. Sourland Mountain Preserve.

Pair of Yellow Swallowtail Butterflies Near the Pond at Sourland Mountain Preserve in New Jersey. Image taken with a Nikon D4 camera and 80-400 mm VRII lens (ISO 180, 400 mm, f/5.6, 1/400 sec).

In previous years I have seen these butterflies congregate near this pond in areas with wet mud. Another time, they were on a dead ground-hog. I wonder if they are looking for a source of salt?

Pair of Yellow Swallowtail Butterflies Near the Pond at Sourland Mountain Preserve in New Jersey. Image taken with a Nikon D4 and 80-400 mm VRII lens (ISO 180, 400 mm, f/5.6, 1/400 sec). (David J Mathre)
Pair of Yellow Swallowtail Butterflies Near the Pond at Sourland Mountain Preserve in New Jersey. Image taken with a Nikon D4 and 80-400 mm VRII lens (ISO 180, 400 mm, f/5.6, 1/400 sec). (David J Mathre)

Monday (08-July-2013) — New Jersey

Summertime Nature in New Jersey. Sourland Mountain Preserve.

Bumble Bee Working a Thistle Bloom in the Sourland Mountain Preserve. Image taken with a Nikon D4 camera and 80-400 mm VRII lens (ISO 160, 400 mm, f/5.6, 1/400 sec).

Bumble Bee Working a Thistle Bloom in the Sourland Mountain Preserve. Image taken with a Nikon D4 and 80-400 mm VRII lens (ISO 160, 400 mm, f/5.6, 1/400 sec). (David J Mathre)
Bumble Bee Working a Thistle Bloom in the Sourland Mountain Preserve. Image taken with a Nikon D4 camera and 80-400 mm VRII lens (ISO 160, 400 mm, f/5.6, 1/400 sec). (David J Mathre)