I’m curious about AI software for analyzing nocturnal bird calls, particularly for detecting owl species. I currently use Nighthawk for help with processing my ARU audio files, but it only detects passerines and few other bird families — no owls. Are there other options out there that I should explore?
GitHub - bmvandoren/Nighthawk: Nighthawk is a machine learning model for acoustic monitoring of nocturnal bird migration.
Nighthawk is a machine learning model for acoustic monitoring of nocturnal bird migration. - GitHub - bmvandoren/Nighthawk: Nighthawk is a machine learning model for acoustic monitoring of nocturna...

19 October 2023 3:21pm
Hi Whitney! You might try checking out if Arbimon would be helpful for you? You can check out how to get started in our support docs here: https://support.rfcx.org/
Also, depending on what geographic region you're working in and what focal species you're using, BirdNet may also be useful?
20 October 2023 2:33pm
Hello Whitney,
Arbimon, as Carly mentioned can be useful, as can the Cluster Analysis tool of Kaleidoscope Pro software. I would also recommend having a look at the new Learning Detector Tool of Raven Pro (link describing it is included below), which taps into the BirdNet database. Assuming you work in parts of the world where most (vocal) bird species are included (e.g. North America, Europe), then you can select the Learning Detector tool to scan for calls of the selected bird species with a threshold that you decide.
All the best,
Christos
Machine Learning Detector – Quick Start Guide
Raven’s new Learning Detector uses TensorFlow machine learning technology to automatically detect and classify sounds. At present the Learning Detector includes BirdNET v2.2, which can detect and classify the sounds of more than 3,000 bird species, as well as machine learning models for the blue whale, North Atlantic Right Whale, and Panamanian katydids. You can also train your own TensorFlow-based machine learning models using Koogu and then integrate them into the Machine Learning Detector.

3 November 2023 12:40pm
Interesting! I am also embarking on something similar but thinking of using Raven Pro + BirdNet
17 November 2023 1:44pm
Colleagues of mine at the BTO have recently extended the functionality of the Acoustic Pipeline recently (which previously focused on the sound identification of European bats, small mammals and bush-crickets) to also include birds - to support batch processing of recordings. See link below.
This includes a specific classifier for nocturnal breeding birds in Europe - including European owls (also classifiers for nocturnal flight calls for migrant birds - NOCMIG etc.
For people that are happy to share individual clips that are of interest to us, the new bird sound identification functionality is free to use.
I wasn't sure whether you were based in Europe, but if you are, this may be worth trying out.
Audible classifiers
The BTO Acoustic Pipeline is developing a suite of tools for the sound identification of audible bird vocalisations, and of other taxonomic groups.
Carly Batist