Gladalski, M., Banbura, M., Kalinski, A., Markowski, M., Skwarska, J., Wawrzyniak, J., Zielinski, P., Cyzewska, I. and Banbura, J. (2015) “Inter-annual and inter-habitat variation in breeding performance of Blue Tits (Cyanistes caeruleus) in central Poland”, Ornis Fennica, 92(1), pp. 34–42. doi: 10.51812/of.133866.