Any thoughts here? New Bern, North Carolina. 8/9/2024. (1 Viewer)

[lou salomon]

Depend on the definition of a species...

Very true. I think most serious ornithologists have said good bye to the pure biological species concept, though. An interesting read to this theme is in the introducing chapters of Shirihai/Svensson, Handbook of WP Passerines.

 

[Valéry Schollaert]

Very true. I think most serious ornithologists have said good bye to the pure biological species concept, though. An interesting read to this theme is in the introducing chapters of Shirihai/Svensson, Handbook of WP Passerines.

I like Svensson approach generally speaking, but I don't think we have to reject totally the biological species concept neither (what he doesn't do AFAIK) ; in opposite, I don't like too much Shirihai's way of studying bird. In all cases, using several points of view would enlarge our understanding.

 

[Joern Lehmhus]

This is an example where hybrids seem to have an advantage against an introduced parasite:

https://royalsocietypublishing.org/doi/10.1098/rsos.181616

One of the cases that makes natural hybridisation interesting