David Mathre Photography

Birds

  • Yellow-rumped Warbler (20-May-2007)

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    David Mathre
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    Eighteen-Years Ago Today. World Life List #59. Rocky Mountain National Park, Colorado.

    Yellow-rumped Warbler (Setophaga coronata) hiding in an Aspen tree. Observed during a walk in Moraine Park in Rocky Mountain National Park. While working part time in Boulder, I would spend time in Rocky Mountain National Park almost every weekend. It gave me a chance to try out various camera/lens combinations to capture images of the wildlife in the park. For this image I used a Nikon D2xs camera and 105 mm f/2.8 VR macro lens. I have more images of Yellow-rumped Warblers in my PhotoShelter Gallery.

    Yellow-rumped Warbler. Rocky Mountain National Park. Image taken with a Nikon D2xs camera and 105 mm f/2.8 VR macro lens.
    Yellow-rumped Warbler. Rocky Mountain National Park. Image taken with a Nikon D2xs camera and 105 mm f/2.8 VR macro lens.

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  • Brandt’s Cormorants (19-May-2009)

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    Sixteen-Years Ago Today. World Life #137. Bodega Bay, California.

    Several Brandt’s Cormorants (Urile penicillatus) along with a Brown Pelican and unidentified Gull on a guano covered rock. Viewed from Carmel beach north of Bodega Bay on the Sonoma coast of California. Gone to See America 2009 road trip.

    Brant's Cormorants. Carmel Beach, Pacific Coast Highway. Image taken with a Nikon D3 camera and 80-400 mm VR lens.
    Brant’s Cormorants. Carmel Beach, Pacific Coast Highway. Image taken with a Nikon D3 camera and 80-400 mm VR lens.

    More images of Brandt’s Cormorants are available in my PhotoShelter Gallery.

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  • Clark’s Nutcracker (19-May-2007)

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    David Mathre
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    Eighteen-Years Ago Today. World Lift List #56. Rocky Mountain National Park, Colorado.

    Clark’s Nutcracker (Nucifraga columbiana) on top of a tree. Morning visit to Moraine Park in Rocky Mountain National Park. Additional images of Clark’s Nutcrackers are available in my PhotoShelter Gallery.

    Clark's Nutcracker. Rocky Mountain National Park. Image taken with a Nikon D2xs camera and 70-200 mm f/2.8 lens + 1.4x teleconverter.
    Clark’s Nutcracker. Rocky Mountain National Park. Image taken with a Nikon D2xs camera and 70-200 mm f/2.8 lens + 1.4x teleconverter.

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  • Red Crossbill (19-May-2007)

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    David Mathre
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    Eighteen-Years Ago Today. World Lift List #57. Rocky Mountain National Park, Colorado.

    Red Crossbill (Loxia curvirostra) on top of a pine tree. Apparently, the “crossed bill” at the front of its beak helps the bird remove seeds from conifer cones. The females are yellow (or green) and the males are red. This female Red Crossbill was viewed during a morning visit to Moraine Park in Rocky Mountain National Park. Additional images of both male and female Red Crossbills are available in my PhotoShelter Gallery.

    Red Crossbill in Rocky Mountain National Park. Image taken with a Nikon D2xs camera and 70-200 mm f/2.8 lens with TC-E 1.4 teleconverter (ISO 100, 280 mm, f/4, 1/750 sec).
    Red Crossbill in Rocky Mountain National Park. Image taken with a Nikon D2xs camera and 70-200 mm f/2.8 lens with TC-E 1.4 teleconverter (ISO 100, 280 mm, f/4, 1/750 sec).

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  • Ruby-Throated Hummingbird (17-May-2025)

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    David Mathre
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    Backyard Springtime Nature in New Jersey.

    I set my Birdfy Hummingbird feeder out a month ago and didn’t get any hits on the Birdy phone app. I had been changing the sugar solution regularly. Today, I noticed that the Birdfy cameras were not online. The solar charging panel was connected, however the last several days have been cloudy and raining so the system probably wasn’t getting charged. I had hoped that the internal battery would have held a charge for longer. I recharged the system via the USB-C port. Within a couple of hours, a hummingbird was detected and had its picture taken. The Birdfy AI bird identification was incorrect. It thought the hummingbird was an Allen’s hummingbird that only lives on the west coast (Oregon, California, and Mexico). This was definitely a Ruby-Throated Hummingbird. Other images of Ruby-throated Hummingbirds are available in my PhotoShelter Gallery.

    Ruby-throated Hummingbird. Image taken by a Birdfy hummingbird feeder camera.

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  • Wintertime Backyard Birds in New Jersey (05-March-2025)

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    David Mathre
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    Morning backyard walkabout with a Nikon 1 V3 camera and 70-300 mm VR lens. I found a wake of Black Vultures feeding on a dead animal in the far back corner of the yard and a couple of early American Robins looking for grubs or worms.

    Black Vultures. Winter in New Jersey. Image taken with a Nikon 1 V3 camera and 70-300 VR lens.
    American Robin. Winter in New Jersey. Image taken with a Nikon 1 V3 camera and 70-300 VR lens.
    American Robin. Winter in New Jersey. Image taken with a Nikon 1 V3 camera and 70-300 VR lens.

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About the author

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 observing and photographing the plants and animals while expanding a wildflower garden/meadow in the backyard. When the sky is clear, I have telescopes viewing the night sky.

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American Robin American Three-towed Woodpecker American Wigeon Arapaho National Wildlife Refuge Bird in Flight Black Vulture Brandt's Cormorant Broad-tailed Hummingbird Brown Booby California Canada Jay Clark's Nutcracker Colorado Dominica European Herring Gull Gadwall Gone to See America 2009 Road Trip Graylag Goose Green Heron Latvia Lily Lake Magnificent Frigatebird Mute Swan MV Explorer New Jersey North Sea Norway Orchard Oriole Oslo Puerto Rico Purple-throated Carib Red-winged Blackbird Red Crossbill Rock Pigeon Rocky Mountain National Park Ruby-Throated Hummingbird Scotland Semester at Sea Sourland Mountain Preserve Spring Spring 2010 Enrichment Voyage Spring 2013 Enrichment Voyage St. Kitts Topaz AI Winter

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