Here are the birds BirdNET identified at my feeder on 2024-09-08 with a confidence greater than 0.799 using 6 second recordings. Please note: These results are using AI only and not reviewed by anyone.
BirdNet is available for multiple operating systems including Linux. BirdNET is designed to work with sound files and not an audio stream. I have written a small script that creates audio files from a RTSP stream and continually sends the files to BirdNET for processing. The script can be found at https://gitlab.com/frrobert2/birdnet-addons/-/blob/main/birdnetrtsp.
Zettelkasten ID birnetrtsp-2024-06-14-1453
While new to birding, I quickly found out that house sparrows are a hot button topic. House sparrows being am invasive species in North America and aggressive towards many native species there are those who want to thin out the flock, some by passive means and some by active means. There are also those who want to let the house sparrow be. No matter which side you are on it would be helpful to reference Walter Bradford Barrow's paper,The English sparrow (Passer domesticus) in North America : especially in its relations to agriculture.
Barrow's paper was the first study about the house sparrow. In his study, he identifies the different native species of birds that are harassed by house sparrows. Many articles on the Internet mention Barrow's study and paper but most do not provide a link to the actual paper. Barrow's paper is available on archive.org at the following link, https://archive.org/details/cihm_06680/page/n5/mode/2up. Barrow's paper is really a book of 423 pages. However the section on Relation of the Sparrow to other Birds is nineteen pages.
I would suggest everyone read the section on Relation of the Sparrow to other Birds as a good background to the House Sparrow question.
Zettelkasten ID housesparrows-2024-06-12-0832
I am a little late with this post but as they say better late than never. The weekend of June third and fourth was the annual POTA Plaque event. I was able to activate both Potato Creek State Park, K-2265 and Chamberlain Lake State Nature Preserve, K-4189. I had a total of thirty-seven FT8 contacts. While not a lot of contacts I was able to make a QSO with 7N1FRE in grid square QM05, which made my day, as it is my longest contact so far.
Besides making a great contact, Roman, my black lab, and I had a great day at a couple of area parks.
Zettelkasten ID potaplaqueevent-2023-06-09-0645
One thing you need for FT8 is accurate time on your computer. Keeping accurate time on a Linux based operating system is quite easy today when your computer has access to the Internet. Most modern Linux distributions do it out of the box and no one thinks about it. Even in the field if you are connected to the Internet your computer has an accurate time, if it doesn't, with a quick trip to https://time.is/ you can set your computer's time with a click of a button.
What if you don't have Internet access? The answer is to use GPS time. Linux distributions use either timedatectl/timesyncd, chrony, or NTP. The first listed option timedatectl/timesyncd does not support GPS time which leaves chrony or NTP. Either chrony or NTP will work. On my laptop that I use for POTA is currently running Ubuntu 22.04.1 LTS so I opted for chrony.
Things you will need for this project is a GPS dongle or an Android phone running GPSshare and a computer running a Linux based operating system.
If you use a GPS dongle use one with Pulse-Per-Second (PPS) support for the most accurate time. You can use one without PPS but your time may not be as accurate.
Rather than using a dongle I used my Android phone running GPSshare. My phone's GPS does not support PPS so if you go the phone route realize you will not have as accurate time as with a GPS that supports PPS.
What I did was based on https://ubuntu.com/server/docs/network-ntp.
DEVICES="tcp://localhost:20175"
# Other options you want to pass to gpsd
GPSD_OPTIONS="-n -b"
# Automatically hot add/remove USB GPS devices via gpsdctl
USBAUTO="true"
refclock SHM 0 refid GPS precision 1e-1 offset 0.9999 delay 0.2
driftfile /var/db/chrony/chrony.drift
bindcmdaddress /var/run/chrony/chrony.sock
rtcsync
sudo systemctl restart gpsd.service and sudo systemctl restart chrony.serviceYou should see something like
MS Name/IP address Stratum Poll Reach LastRx Last sample
===============================================================================
#? GPS 0 4 177 24 +21ms[ +17ms] +/- 200ms
^- prod-ntp-4.ntp1.ps5.cano> 2 10 377 29m +833us[ +833us] +/- 48ms
^- prod-ntp-3.ntp4.ps5.cano> 2 10 377 969 +1240us[+1240us] +/- 51ms
^- prod-ntp-3.ntp1.ps5.cano> 2 10 377 777 +1991us[+1991us] +/- 51ms
^- alphyn.canonical.com 2 10 377 998 +1522us[+1522us] +/- 80ms
^- 44.190.40.123 2 10 357 1004 +2127us[+2127us] +/- 81ms
^- pittsburghmusicals.com 3 10 377 982 +1632us[+1632us] +/- 58ms
^+ ntp1.glypnod.com 2 10 377 923 +1561us[+1561us] +/- 37ms
^+ ntp01.nonexiste.net 1 10 377 21m -6787us[-6787us] +/- 32ms
^- srv11.dynamigs.net 2 10 377 33m +24ms[ +24ms] +/- 125ms
^+ triton.ellipse.net 2 10 377 44 +6464us[+6464us] +/- 27ms
^- srcf-ntp.stanford.edu 2 10 377 26m +4218us[+4218us] +/- 37ms
^* 140.99.199.146 2 10 377 31m +501us[ +539us] +/- 14ms
Showing that the GPS is providing time and everything is working.
Remember using your phone's GPS works but a GPS dongle with PPS support would even be better.
Zettelkasten ID linuxandgpstime-2023-05-20-1219