The Science behind Project Dawn Chorus

What does “dawn chorus” mean, and what is interesting about it?

Dawn chorus – the early morning bird concert – is fascinating to nature lovers, artists and dreamers alike. But it is also highly interesting for scientists.
Today we know that bird song fulfils many important functions, especially during the breeding season, for example to attract females or to defend territories against rivals. For bird researchers (ornithologists), the early morning is a very interesting time of the day because this is the time when most (song)birds are especially active. Although birds may keep singing throughout the day, their song behaviour is never as intense as during the early morning hours. Interestingly, each bird species begins their song at a specific time with respect to sunrise. This means that the sound of the bird concert will change its tune every morning when different species enter the stage. The sound also differs between regions, depending on which species are around to sing along – just like a concert sounds quite different if gentle flutes or electric guitars set the tone.
Not only time and place, but a number of other factors may also influence the dawn chorus, such as weather conditions (e.g. storm) or human-made noise (e.g. from air traffic). Hence, the dawn chorus of the Himalayan foothills will likely sound completely different from the one down at Piccadilly Circus in London (see noise maps, e.g.: http://noise.eea.europa.eu/) – and the latter will probably sound rather different on a busy Tuesday morning compared to on a rainy Sunday when a lot of people are allowed to sleep in.
We find this flexibility in bird behaviour absolutely exciting and would like to understand it better. In this special year of 2020, lockdown restricts a lot of human activity, thereby also tuning down a lot of human-made sounds, and leaving the centre stage to the bird dawn chorus – and we are here to listen very closely!

What are soundscapes, and how are they useful for science?

Soundscapes (from sound + landscape) reflect a lot of properties of a given habitat through their sound alone. Using the words of Bernie Krause : „While a picture may be worth a thousand words, a soundscape is worth a thousand pictures“ .
Sometimes, soundscapes change suddenly and drastically. A painful experience that Bernie witnessed when recording sound before and after logging activity in a Californian forest: despite reforestation efforts, the majority of birds had become silent,
even years after the logging event*. Other changes may occur more gradually, for
example due to the increase in road-traffic induced noise.
Thus, sound recordings or soundscapes may help scientists to become aware of longterm
changes in a habitat’s species composition, and to indicate where species
disappear and biodiversity decreases. Further, they may also help investigate the
influence of human-made noise on the song behaviour of birds.

What is the role of “citizen science” for Dawn Chorus?

Citizen science is based on the help of volunteers, for example for data collection or
analysis during a scientific project. With volunteer support, scientists are able to collect
much more data than they could ever achieve on their own. Even if the data are not
always of professional quality, they still produce exciting and important results. Last
but not least, citizen science has an educational aspect in that it transfers knowledge,
and provides food for thought.
In our project Dawn Chorus, we rely on citizen science to obtain sound recordings of
the early morning bird song from a multitude of locations simultaneously. These data
are complemented with information on time, date and location of the recording, and a
few simple questions about the current weather conditions and human-made
background noise. From this, scientists will be able to document the current state of
soundscapes, to compare it to the ones in the years to come, and to gain important
insight into human influence on biodiversity.
Many people have heard about bird species decline on the news, but they may not be
aware that this phenomenon is happening right now, literally in their own backyard.
The dawn chorus is a wonderful nature spectacle, and it is a useful indicator of species
diversity which we would like to make accessible. So join us in experiencing this
beautiful spectacle of nature, and engage – take a conscious listen! Especially in these
challenging times of the 2020 lockdown in which human activities but also human
sounds are toned down.

What kind of data will you collect, and why?

As explained above, the dawn chorus sounds different, depending on where you are
and what time (with respect to sunrise) it is. To disentangle the effect of human
activities, e.g. noise, we need to control for other factors such as the time of day or the
current weather conditions, because these factors may also strongly influence the
dawn chorus.
This is why we require a LOT of recordings, preferably collected under the same
recording conditions, from many different locations. Ideally, each volunteer would
collect multiple recordings from the same location (1) over the course of the same
morning (before, during and after dawn), or (2) made at the same time, but distributed
across multiple days (ideally on a normal working day and a holiday). You will find
instructions on how to make an ideal recording here (https://dawn-chorus.org/en).
Based on the collected data, we hope to identify the species and timing (with respect
to sunrise) of bird song. A short questionnaire in the upload section aims to collect
additional data on location, time, current weather conditions, the exact temperature (if
available), the type of habitat (e.g. city balcony or country garden), as well as the
amount of human-made noise experienced during the recording.

Who “we” are

The Citizen Science Platform Dawn Chorus is a project by BIOTOPIA (Bavaria’s new
museum of life sciences and environment) and the Nantesbuch Foundation. Scientific
support is provided by the Max Planck Society, via the Max Planck Institute for
Ornithology in Seewiesen, Germany.






Initiatoren
 
Scientific Partners
Advisors

Dr. Bernie Krause, Bioacoustician

Prof. Dr. Manfred Gahr, Director, Max Planck Institute for Ornithology, Seewiesen






BIOTOPIA –
Naturkundemuseum Bayern
Botanisches Institut
Menzinger Str. 67
80638 München, Germany

Phone: +49 (0)89 178 61-422
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© BIOTOPIA - Naturkundemuseum Bayern 2019

BIOTOPIA Newsletter

News

We proudly announce that BIOTOPIA – Naturkundemuseum Bayern is joining the Global Coalition for Biodiversity,  as the first official member from Germany. The Global Coalition calls for strong mobilisation of all national parks, research centers, science and natural history museums, botanic gardens, zoos, aquariums, and beyond to unite forces and make their voices heard about the nature crisis ahead of the UN Biodiversity Conference (COP15) in 2021. After the Royal Belgian Institute of Natural Sciences, BIOTOPIA also becomes the 2nd Natural History Museum worldwide to join the Coalition.

Download Press Release 2019

 

In June 2020, the Museum Mensch und Natur celebrated its 30th anniversary - unfortunately, due to the Corona Pandemic, however, without a celebration or other public event. Since the museum has become very popular with many visitors over the past 30 years, this anniversary is now being honored with a launch in Google Arts & Culture.

Use the search function to select the Museum Mensch und Natur and get the opportunity to explore selected stories and objects. In addition, you can even visit our museum virtually via various museum views. Take your time to look at some of the most popular objects and maybe you will feel like visiting the museum live again.

Google Arts & Culture

A provocative call for the transformation of science museums into "idea colliders" that spark creative collaborations and connections. Gorman focuses on the dialogue between scientists and artists, designers, policymakers, and the public and considers the questions, ideas and experiences of each visitor as an important resource for a new kind of museum experience. The book can be ordered online in English and provides exciting insights into the planned BIOTOPIA – Naturkundemuseum Bayern in Munich and giving forward-looking models of science engagement around the world.

The BIOTOPIA annual review 2019 is now available for download! It includes exciting insights behind the scenes, an interview with Dr. Auguste von Bayern, a review of the EAT festival and much more! So it's worth a glance and whoever is enthusiastic about BIOTOPIA's vision is welcome to donate and become a sponsor.

Download Annual Report 2019

 

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Do you have questions or need further information? Do not hesitate to get in touch with the BIOTOPIA team and the Förderkreis BIOTOPIA.

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