What are the consequences of being a downy oak (Quercus pubescens) or a holm oak (Q. ilex) for breeding blue tits (Parus caeruleus)?

Blondel, J., Isenmann, P., Maistre, M., & Perret, P. (1992). What are the consequences of being a downy oak (Quercus pubescens) or a holm oak (Q. ilex) for breeding blue tits (Parus caeruleus)? In Quercus ilex L. ecosystems: function, dynamics and management (pp. 129–136). Springer Netherlands. https://doi.org/10.1007/978-94-017-2836-2_13