Hello Sheson,
I support the Flying Crows mod on SSE and have had intermittent reports of issues with crows missing/not showing up. Only just recently have I been able to reproduce any of these issues and only after updating to the newest version(s) of DynDolod 3.0 (134 & 135).
At current, it appears crows are not loading/appearing within the Tamriel worldspace. Child worldspaces (Whiterun/Windhelm) appear to load the models without issue both within the child worldspace and when viewing them from the Tamriel worldspace. I'm unsure if this is something that needs to be resolved from my end with the DynDolod config but figured it would be best to inquire with you first.
I've uploaded the DynDolod/Texgen logs & debug logs here: https://mega.nz/folder/BXYykDCL#1DraJOIX9KaEuo7YDft4Kg
The link should contain each document in plain text and a zipped folder containing all 4 if that is easier to download. Please let me know if you have any difficulty in accessing the logs and/or if I can provide any further details. Thanks and have a great day!