Black bears (Ursus americanus) currently range more widely than grizzlies (Ursus arctos) in the lower 48, but where both species roam they are sometimes confused. In a national park where animals are habituated to human viewers, you’re probably more likely … Continue reading →
Teardown of Stealth DS4K Trail Camera, featuring insights into design and manufacturing quality. Video of teardown provided as a reference.
Continue reading →Teardown of Bushnell Core DS 4K Trail Camera, featuring insights into design and manufacturing quality. Video of teardown provided as a reference.
Continue reading →Only about 10-25% of the black bear’s diet is animal food, which in most regions is in the form of colonial insects and beetles. Recently we captured some great footage of a sow with cubs digging a nest of wasps … Continue reading →
Knowing the detection zone pattern can help produce more “true triggers” and fewer “false triggers.” In an earlier post Deep Tech: Trail Camera PIR Sensors I covered some of the details of PIR sensors. Based on feedback from subscribers, though, I realized that I had missed some subtle aspects of the Fresnel lens optics and detection zones for PIR sensors. In this post, I look more closely at trail camera detection zones, and how they work. I also give a straightforward way to find the detection zones in most cameras. I use this method to measure the detection zones for three camera models.
Continue reading →With longer, straighter claws and a larger shoulder hump, grizzly bears (Ursus arctos horribilis) are better diggers than black bears, and much more likely to dig for food. So it’s no surprise that roots comprise a greater portion of the … Continue reading →
In this post I look explore capacity vs. temperature and discharge rates for rechargeable Li-Ion AA batteries from TenaVolts, EBL, and Pownergy
Continue reading →Teardown of Browning Spec Ops Elite HP5 (BTC-8E-HP5). The PIR sensor “blinders” are gone and there’s a new lens configuration.
Continue reading →Many mammals use urine, scat, and glandular secretions to communicate information about their identity, territorial ownership, social status, sexual readiness, etc., and fishers, Pekania pennanti (formerly Martes pennanti) are no exception. In this piece on fisher scent marking, I review … Continue reading →
In this post I look inside a Browning Recon Force Elite HP4 Trail Camera. I find a couple of quirks which can be easily fixed.
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