https://www.mpg.de/595551/pressRelease200903091?c=2249
Housing shortage alters reproductive behaviour in blue tits | Max-Planck-Gesellschaft
Max Planck researchers manipulate the density of nest boxes and investigate the impact on breeding performance on blue tits.
housing shortagereproductive behaviourblue titsmax planckalters
https://www.liverpool.ac.uk/mammalian-behaviour-and-evolution/research/publications/2013/baculumpredictsreproductivesuccessinmales/
Baculum predicts reproductive success in males | Mammalian Behaviour and Evolution | University of...
reproductive success