I'm going to no-vote this one. The concept is interesting, but the execution feels 'off' to me.
Specifically, I feel like the Foundation isn't responding realistically here. They go into great detail about the appearance and behavior of the crows, and just throw in 'and then transforms into a human' as if transforming is a simple thing requiring no explanation.
Similarly, in the conversation, immediately agreeing to the Raven's terms, referring to them by name and offering them secrets without any thought. I feel like, if the Foundation respected them, they would not refer to them by SCP-4580 to begin with, and if they didn't respect them, they would keep using SCP-4580. And I feel like they would need to consult with their superiors.
I feel like the boring is dragged out and the awesome is rushed over, so many fine-tuning that would be good, and could help with that 'hook' Researcher WTD mentioned.