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.

Five-Years Ago (15-March-2016) — Indian Ocean

Gone to See the World. Semester at Sea Spring 2016 Voyage on the MV World Odyssey. Day 69: At Sea, Indian Ocean off the east coast of South Africa.

Viewed from the Deck of the MV World Odyssey: Cape Gannet. My eBird Checklist


Cape Gannet in flight viewed from the deck of the MV World Odyssey. Individual images in the slideshow are available in my PhotoShelter Gallery.

Six-Years Ago (14-March-2015) — Chile

Gone to See Patagonia 2015 Photography Tour with Thom Hogan. Day 13: Lago Grey, Chile

Morning walkabout at Hotel Lago Grey: Austral Parakeet. My eBird Checklist


Morning walkabout at Hotel Lago Grey. Individual images in the slideshow are available in my PhotoShelter Gallery.

Saturday (13-March-2021) — New Jersey

Wintertime Backyard Nature in New Jersey.

Again not many visitors to the birdfeeder: Tufted Titmouse, Dark-eyed Junco, Song Sparrow, Northern Cardinal. At dusk six Turkey Vultures landed in the backyard trees to roost overnight.


Daily backyard visitors. Individual images in the slideshow are available in my PhotoShelter Gallery.


Daily backyard visitors. Individual images in the slideshow are available in my PhotoShelter Gallery.

First Purple Crocuses from my own backyard.


Purple Crocuses. Individual images in the slideshow are available in my PhotoShelter Gallery.

Daily Electric Energy Used (53.5 kWh) from Sense. Daily Solar Electric Energy Produced (63.4 kWh) from Sense and SolSystems. Sunny all day. The Geothermal HVAC system wasn’t needed for 24 hours, but I did run a batch of laundry. A surplus of 9.9 kWh. Five days in a row that the solar panels produced a surplus.

Three-Years Ago (13-March-2021) — New Jersey

Backyard Wintertime Nature in New Jersey

Late afternoon backyard walkabout: Turkey Vulture. My eBird Checklist.


Late afternoon backyard walkabout with a Nikon D5 camera and 80-400 mm VRII lens. Individual images in the slideshow are available in my PhotoShelter Gallery.