An article explaining the difference between 'old' forests and 'new' ones and the role they play in birds species survival. As a reminder of how important they are please consider that there are species of parrots that would ONLY nest in very old trees, like the Spix and the orangebellies -two species that are almost extinct mainly because of deforestation.
https://www.sciencedaily.com/releases/2 ... 105737.htm