Will small amounts of Brioche harm the birds

I sometimes bake my own Brioche bread ( mainly wheatflour dough, butter,small amount of sugar).The birds get some as a special treat and seem to love it as evident by the bluetit in the first photo.I would like to be reassured that it will not be harmful to them. Does anyone know?

Too cold to venture out today, but lots of birds around the feeders in between wet snow flurrys

Bluetit with Brioche

Male Blackbird

Male Bullfinch

 

Female Bullfinch

 

Robin

 

Chaffinch

Of all creatures, man is the most detestable, he is the only creature that inflicts pain for sport, knowing it to be pain.
~ Mark Twain