I’m definitely not up on the architectural detail in Catholic houses of worship so I don’t know the “proper” name of this feature, but I did enjoy this bird on the ceiling of the rooflet over the altar in this cathedral. Out front is a statue of the original patron, and the pigeon atop his head loved his perch (coo-coo) and did not take flight for the whole five minutes we spent in front of the façade.
Ah, wandering along links in WikiPee, I discovered that the rooflet is a baldachin, Italian baldacchino. There’s one in St. Peter’s (Rome), and this building was meant to imitate that one, hence this copied detail mimicking the Bernini original there. Enough; I will probably forget this in a few days….