The LBJ, the app, and the frustrations of birdwatching
Mrs P and I have been birdwatching for nearly 40 years. It’s a great way to pass the time, one that allows us to escape temporarily from the pressures of modern living and instead get up close and personal with nature. But it’s not without its frustrations, of which the most frustrating thing of all is the LBJ. And in case any Americans reading this are wondering, that has nothing at all to do with Lyndon Baines Johnson – aka LBJ – the 36th president of the US!
For the uninitiated, in the British birding community LBJ stands for “little brown job”, which Wikipedia tells us is “an informal name used by birdwatchers for any of the large number of species of small brown passerine birds, many of which are notoriously difficult to distinguish.” The problem is compounded by the fact that your average LBJ never sits still for long, instead flitting hither and thither between bushes, briars and other forms of cover. As a rule, you only get a fleeting glimpse of an LBJ before it goes back into hiding. LBJs are a birder’s worst nightmare.

IMAGE CREDIT: “Cetti’s Warbler” by Mike Prince is licensed under CC BY 2.0. Sourced via Openverse
An alternative approach to identifying LBJs is via their songs. Unfortunately Mrs P and I haven’t been listening carefully enough over the last four decades, with the result that the number of species we can identify by their song alone can be counted on the fingers of one hand. But – much to my amazement – modern technology has come to the rescue, in the form of an app on my mobile phone.
A casual discussion with a bird enthusiast last year first brought the Merlin Bird ID app to our attention. It’s dead simple, which is fortunate as mobile phones aren’t my thing. When a bird is singing just fire up the app, which will analyse the song against its database and tell you which bird you’re (most probably) listening to. Simple but effective, as we discovered last week, when it led us to identify our first ever Cetti’s Warbler.

The Cetti’s was heard – and briefly seen – just a few metres from this spot. Unfortunately Mrs P was unable photograph it, and I’m grateful to Mike Prince for the image of the illusive LBJ at the top of this post
Mrs P and I were at Straw’s Bridge – aka Swan Lake – a local nature reserve that I first wrote about nearly three years ago. We go there mainly to enjoy the wildfowl, but were intrigued this time by glimpses of an LBJ that we couldn’t identify, moving between a series of bushes by the edge of the lake. It proved typically illusive, but just when we were about to give up and move on the bird started to sing in short, loud bursts. I whipped out my phone, and in a just a few seconds we learned its identity.
For confirmation I cross-checked with other information provided by the app. Its photo of the Cetti’s clearly matched the brief glimpses we’d had of the bird, and the textual description of its appearance and behaviour was bang on: a “dumpy and broad-tailed warbler, warm brown above and pale grayish below, with a narrow eyebrow…favours tangled vegetation near water, including reedy marshes with bushes and scrub. Often heard but rarely seen. Explosive, rich staccato song often draws attention.” Follow the link below to hear the song of the Cetti’s Warbler’s.
I found this recording of a singing Cetti’s Warbler on YouTube, courtesy of Birdfun.
The species is a new arrival in the UK, first breeding here – in the south-eastern county of Kent – in the early 1970s. Since then its range has slowly expanded northwards, but until our LBJ encounter last week we’d no idea the Cetti’s warbler had reached our home county of Derbyshire. Without the help of the bird identification app we would probably never have known.
In principle, I would rather leave the modern world behind when I’m out in nature. Mobile phones have their place, but a birdwatching trip isn’t one of them…or so I thought until Merlin Bird ID helped us identify our first Cetti’s Warbler. Having seen that 21st century technology can help us vanquish one of birdwatching’s biggest frustrations – the LBJ – I guess I might need to revise my opinion.







































































































