 My name is Megan Wanchuk and I'm a master's student in range science at North Dakota State University working under Dr. Devin McGranahan. We are tracking where cattle are going and what they are doing on patch burn, season long and rotational grazing pastures. This is important to determine grazing behavior and what cattle are eating. So on the patch burn grazing pastures, we're looking to see how much they are using the most recently burned patch. And on all the other pastures as well, we're also interested in where the grazing hot spots are and how these are changing between years. So to do this, we have developed a low-cost GPS collar that allows us to get all the information required. The cost is about $125 per unit. These collars have a burst logging system where positions are recorded at 20 second intervals for a 5 or 10 minute period per hour followed by a rest period. This allows the batteries to last for about a month so we can bring in the cattle once a month, change out the batteries and get all the information off the collars. The burst logging system can extend battery life by a factor of 7 compared to regular logging systems where a position is recorded every 5 minutes. These collars are also equipped with accelerometers which provide us with the capability to gather behavioral data. So every time a position is recorded, we also get information on what the animal was doing at that second so we can determine if they were resting or grazing. The Adafruit open source technology that we also use to create these collars have the capability to be cellular which would allow us to get real-time data on the loggers. However, for our research project that we are doing right now, we don't need the real-time data so these collars are not set up to do this. All in all, we are able to successfully track cattle locations and behavior using a low-cost DIY GPS collar system.