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Author Archives: Bob Zak

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Trail Camera Noise: Part 1 — Clicks

Winterberry Wildlife Posted on July 15, 2021 by Bob ZakJuly 28, 2021
Bear Curious about Trail Caemra

This post examines noise made by some types of trail cameras to understand which models are more likely to be heard by animals.

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Posted in Blog, Camera Trapping Technology | Tagged clicks, ir filter, startled animals, trail camera noise | 20 Replies

How (some) Trail Cameras Fail

Winterberry Wildlife Posted on June 30, 2021 by Bob ZakMarch 12, 2025

Pink panther caused by stuck IR filter. In this post I look at common camera trap failures, their causes, and fixes.

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Posted in Blog, Camera Trapping Technology | Tagged broken PIR lens, early battery drain, failed flash, failure, loss of focus, no photos taken, pink trail camera photo, run-on triggering, settings reset, stuck IR filter, trail camera, trail camera fails, wrong date, wrong date/time, wrong time | 114 Replies

Using an Acoustic Logger to Capture Wildlife Sounds

Winterberry Wildlife Posted on May 22, 2021 by Bob ZakMay 23, 2021
vocalizing coyote with spectrogram

Acoustic loggers are like camera traps, but record only high definition sound. Example of coyote howling, bat feeding buzz and instructions for configuring AudioMoth acoustic logger and processing files.

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Posted in Bats, Blog, Camera Trapping Technology, Dog family | Tagged acoustic logger, audacity, audio trapping, AudioMoth, bat, coyote, feeding buzz, howling, yipping | 8 Replies

The Art of the Treeless Set

Winterberry Wildlife Posted on March 30, 2021 by Bob ZakApril 19, 2021
treeless set made with root stump

Treeless set for Camera trap set up in prairie habitat. Camera attached to stump root ball

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Posted in Blog, Camera Trapping Technology | Tagged cable lock, camera trap in rocks, camera trap in the desert, Camera trap in the prairie, camera trap in wetlands, camera trap no trees, no tree, nylon strap, trail camera, treeless set, tripod, wall nuts | 9 Replies

Camera Trapping Bats with an Acoustic Trigger

Winterberry Wildlife Posted on December 5, 2020 by Bob ZakDecember 10, 2020
Remote camera photo of bat

An acoustic trigger is the key to capturing camera trap photos of bats in flight — as close as your backyard

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Posted in Bats, Blog, Camera Trapping Technology | Tagged acoustic trigger, bats, camera trapping, massachusetts, remote camera, wildlife photography | 7 Replies

Building a DSLR Camera Trap: Part 1 – Design Elements

Winterberry Wildlife Posted on October 26, 2020 by Bob ZakAugust 15, 2021
DSLR Camera Trap and Flying Squirrel

A camera trap based on a DSLR camera can take better photos than standard camera traps. This post describes the key elements in making one.

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Posted in Blog, Camera Trapping Technology | Tagged camera trap, DIY, DSLR, homebrew, photos, trail camera | 13 Replies

Are My New Batteries Really New?

Winterberry Wildlife Posted on July 10, 2020 by Bob ZakNovember 25, 2020
Open circuit voltage measurement of battery

In a recent post on thermal runaway, I gave the advice of always using “well matched” batteries. One way to do this is to use new batteries, then continue to use these batteries as a set. But this assumes the … Continue reading →

Posted in Blog, Camera Trapping Technology | Tagged counterfeit lithium batteries, lithium batteries, lithium iron disulfide batteries | 12 Replies

Ants in the Trail Camera

Winterberry Wildlife Posted on June 20, 2020 by Bob ZakJune 20, 2020
inset showing ant found in trail camera

Trail Cameras seem to make great nesting spots for ants. How and why to they get in? And once they’re in, how can we get them out?

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Posted in Blog, Camera Trapping Technology | Tagged ant, ants, causes, infestation, prevention, Trail Cemeras | 5 Replies

Runaway Trail Cameras

Winterberry Wildlife Posted on May 26, 2020 by Bob ZakMay 28, 2020
Thermal Image of Trail Camera

We recently had several cameras runaway — that is, take thousands of photos, sometimes exhausting the SD card, at maximum rate, with no apparent trigger. Here is the likely culprit, and some ways to avoid this event in the future

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Posted in Blog, Camera Trapping Technology | Tagged false triggers, lithium batteries, thermal runaway, trail cameras | 13 Replies

Butt Shots in Camera Trapping: Causes and Fixes

Winterberry Wildlife Posted on May 21, 2020 by Bob ZakJuly 13, 2020

We all put trail cameras up with hopes of capturing the perfectly framed face shot of a panther, or bobcat, or fox. With these great expectations, we download images from SD cards left months in the field, only to discover perfectly framed photos of the derrieres — the infamous “butt shot!”

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Posted in Blog, Camera Trapping Technology | Tagged butt shots, camera trap, PIR sensor | 10 Replies

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