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.

Wednesday (14-April-2021) — New Jersey

Springtime Backyard Nature in New Jersey.

Visitors to the patio birdfeeder: Mourning Dove, Tufted Titmouse, House Finch, American Goldfinch, Chipping Sparrow, Brown-headed Cowbird, Northern Cardinal.


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

Early spring flowers blooming: Daffodils, Dandelions, Grape Hyacinth, Tulip, and Violets. Time-lapsed video of the Tulip opening.


Early Spring Flowers. Individual images in the slideshow are available in my PhotoShelter Gallery.

Daily Electric Energy Used (49.4 kWh) from Sense. Daily Solar Electric Energy Produced (42.4 kWh) from Sense and SolSystems. Cloudy. A deficit of 7.0 kWh.

One-Year Ago (14-April-2020) — New Jersey

Backyard Springtime Nature in New Jersey

Morning Visitor: Carolina Wren, House Finch, Northern Cardinal. My eBird Checklist.


Morning Birdfeeder Visitor. Images taken with a Nikon D5 camera and 600 mm f/4 VR lens. Individual images in the slideshow are available in my PhotoShelter Gallery.

Three-Years Ago (14-April-2018) — New Jersey

Backyard Springtime Nature in New Jersey

Morning Visitor: House Finch. My eBird Checklist.


Morning Birdfeeder Visitor. Images taken with a Nikon D4 camera and 600 mm f/4 VR lens. Individual images in the slideshow are available in my PhotoShelter Gallery.

Nine-Years Ago (14-April-2012) — New Jersey

Backyard Springtime Nature in New Jersey

Afternoon Walkabout: Black Vulture, Turkey Vulture. My eBird Checklist.


Afternoon Walkabout. Images taken with a Nikon D3s camera and 300 mm f/2.8 lens. Individual images in the slideshow are available in my PhotoShelter Gallery.