Here are some examples of masks I’ve made, keeping values within certain ranges. Then, I get rid of all the other values. gdal_calc.py -A combine_rcls.tif –outfile=result.tif –calc=”1*((A<=119)&(A>=44))” –NoDataValue=0 gdal_calc.py -A result.tif –outfile=FPWF.tif –calc=”1*((A<=54)|(A>=111))” –NoDataValue=0 gdal_calc.py -A combine_rcls.tif –outfile=FD.tif –calc=”1*((A<=37)&(A>=19))” –NoDataValue=0 gdal_calc.py -A combine_rcls.tif –outfile=MH.tif –calc=”1*((A<=77)&(A>=61))” –NoDataValue= This leaves only 1’s where the desired pixel values […]

Today we walked Loveland Rd. for a little ways past Drew’s Landing. A ruffed grouse was in the open alongside the road, so we paused. We were stoked when it strutted out into the road and showed off its namesake ruff! It also flared its tail and strutted around for a bit, before retreating into […]

There’s a cluster function in the raster package! https://www.gis-blog.com/increasing-the-speed-of-raster-processing-with-r-part-23-parallelisation/ https://www.gis-blog.com/increasing-the-speed-of-raster-processing-with-r-part-33-cluster/ http://r-sig-geo.2731867.n2.nabble.com/Re-Parallel-predict-now-in-spatial-tools-td7586048.html http://www.timassal.com/?p=1920

This evening, I walked a trail in Douglas Co. and heard a barred owl in a different spot than my 1st detection. I heard the owl in the woods beyond the clear cut. It could be the same owl as before! If so, I made a hypothetical home range. I wasn’t sure how far into the […]

I saw this article go viral among the circle of my birding friends, and I had mixed reactions. Ironically, I had just written a blog post the day prior about the role that listing plays in my birding practice, and how/why I’m driven by my life list. While I “get” the structure of the piece, […]

I realized when I became slightly uncomfortable asking myself “why lifers,” I had to blog it out! I’ll start with what to me is the personal elephant in the room: using fossil fuel to see a new species, alongside the potential disruption to the bird. If I’m honest, I feel the contradiction of releasing more […]

While I was in Evergreen, I was reawakened to the wonder in the everyday. I saw it afresh, because it wasn’t just any day for me. I spent most of the first day of my vacation walking around a park at the center of town, where plenty of locals were taking their morning walks. I […]

We stayed in Denver last night to enjoy some city amenities and the urban ecology scene today! We walked around the greenbelt a bit in hopes of seeing some western birds, but didn’t see many. In the adjacent neighborhood though, we saw a beautiful dark morph western red-tailed hawk! Then, sadly I had to drop Paul […]

We meandered our way back to the city from Salida, with many birding detours! Just outside of town, we stopped at a housing community to see a flock of pinyon jays. Then, we went back a different route than the way we came through the mountains. I hiked to the first “peak” (I think to the saddle?) […]

When we left for the lek at 5:15 AM it was 28°F. We anticipated this by studying the weather before we left, so I brought all my cold weather gear. We were planning to use the Jeep as a blind, which would require sitting still for an untold number of hours until the Gunnison sage-grouse […]