The Solitary Bee Project: One Year On

By Stephanie Maher

About a year ago, I wrote an article for this blog about ‘The Solitary Bee Project’, a citizen science endeavour I had recently launched as part of my PhD research. The primary aim of this project was to compile a dataset of the nest site locations of four solitary bee species and gather some information about where these bees chose to nest. When I was writing the first blog, the project had been running for a couple of months and was starting to gain some momentum. A year on, I can say that not only was significant momentum gained, the project sort of ran away with itself! More than four hundred records were submitted to the website and the enthusiasm of the public for solitary bees was strikingly apparent in the many emails, letters and tweets the project received.

Solitary bees, and particularly their homes, have been rather neglected in the research literature over recent years due to the logistical difficulties associated with doing this kind of work. What this project has shown is that citizen science approaches have the potential to help overcome these barriers. The public have demonstrated that they are keen to protect and learn about solitary bees and they are capable of finding nest sites. By monitoring the submitted records, I was able to identify and visit thirty active nesting sites over the course of the year.

SM Examining_Andrenafulva_site
Stephanie examining an Andrena fulva (Tawny mining bee) site
SM Solisamples
Soil samples from some of the nesting locations


From these visits I took a whole host of measurements to try and better understand why solitary bees nest where they do and what makes a good nest site. As one scientist working alone, this partnership with the public was invaluable and allowed me to carry out an analysis I could not have achieved otherwise.

There is still much that we don’t know about solitary bee nest sites, not just in terms of the habitat structure, but a plethora of unanswered questions spring to mind; about nesting behaviour, parasitic species, the relationship between nest sites and foraging resources, how to provide suitable nest sites and much more.

SM Huge_colleteshederae_site
Huge Colletes hederae (ivy bee) nesting site. Ivy bees were recorded as new to Britain in 2001.
SM Chederae_next_to_greenhouse
Colletes hederae (the ivy bee) nesting along side a greenhouse

Now that ‘The Solitary Bee Project’ has ended, I am looking ahead and am optimistic that the future of solitary bee nesting research is bright. There are scientists and citizens around the world who care about these questions and are doing their part to answer them. I am hopeful that soon, whether bees are discussed in conference rooms or coffee shops, the importance of understanding, protecting and providing their homes will be part of the conversation, just as much as their food requirements are. Until then though, I’ve got plenty more work to do!


Stephanie Maher (@SolitaryBeesUK) graduated from Trinity College Dublin in 2011 with a degree in Zoology. She is currently a PhD candidate at Anglia Ruskin University, UK.


1 thought on “The Solitary Bee Project: One Year On”

  1. Hi folks

    we have a good deal of interest in bees on Trinity’s Sustainability Network FB page – feel free to share a link to the Campus Buzz to the FB group here anytime: (anyone can join the group and then post to it).

    All the best,

    Michele Hallahan LEED AP, MSc, ALCM

    Sustainability Advisor

    Oifig an Phropaist/ Office of the Provost

    Phone: (087) 44 88 014

    Check out Trinity’s Sustainability webpages and our Sustainability Network Facebook Page

    Trinity College Dublin, the University of Dublin is ranked 1st in Ireland and in the top 100 world universities by the QS World University Rankings.



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