iCloud Drive Bird Service always running I am having a problem with iCloud Drive. I managed to see progress thankfully with brctl log --wait --shorten (taken from here).

It seems like there is an error running every second or even more often.

[ERROR]  14.007 [2016-01-09 23:17:13.007] bird.scheduler.Uploader        fs.uploader               BRCFSUploader.m:732
Unable to copy thumbnail at '/.DocumentRevisions-V100/PerUID/501/6c131/com.apple.thumbnails/:501:QLThumbnailAdditionName/thumbnail.jpg' to upload stage: &lt;NSError:0x7fec5e22a330(NSCocoaErrorDomain:260) - {
    NSFilePath = "/.DocumentRevisions-V100/PerUID/501/6c131/com.apple.thumbnails/:501:QLThumbnailAdditionName/thumbnail.jpg";
    NSUnderlyingError = "&lt;NSError:0x7fec5e248200(NSPOSIXErrorDomain:2) - {\n}&gt;";


The bird process in the Activity Monitor, which is responsible for the iCloud Drive syncing, is taking up 150 and more percent of the CPU all the time and doesn't stop.

What I tried:


installed iCloudStatus, which shows which files are being synced...
but the file doesn't show up
killed the bird and the cloudd process... will just fire up again
deleted ~/Library/Application Support/CloudDocs all my files were deleted and newly downloaded but I got the same error


What can I do to get rid of this? Thanks for any suggestions.
I got rid of the problem by removing the folder that contained the file over the terminal. Seems like there was something mixed up.
This is how I did it:

Identify the source of the problem using this command:
brctl log -w --shorten

I looked into it and saw there was one error always repeating and it always tried to upload it.

Because I couldn't find the file via the terminal (because it was never on my disk) I deleted the folder that should have contained the file. It did that using the command
sudo rm -rf name_of_the_folder


I hope that helps someone.