The Halo That Would Not Light

I might be taking this poem the wrong way, but I think it's about a child dying or the murder of a child. Then again one of my favorite poets is Edgar Allan Poe and he tends to have really dark, gruesome poems so I could be missing the symbolism of this poem and taking it too literally.
The first part, "When, after many years, the raptor beak Let loose of you," I took this as a decaying body and the raptor beak is the beak of a bird such as a crow or vulture who eats decaying flesh. The next part, "He dropped your tiny body In the scarab-colored hollow Of a carriage," I thought it was unusual that the author specifically addressed, "He", which made me think that some man had taken this child, killed him and left him somewhere out in the open where the birds got after the body. Scarab-colored would be blue and gold so I think it means that the man put the body into some old time carriage. The part, "left you like a finch Wrapped in its nest of linens wound With linden leaves in a child's cardboard box." The comparison to a finch was confusing because a finch is just a small bird that was introduced to North America and the Hawaiian Islands and I didn't find anything about a finch leaving it's young so perhaps it used the comparison so the nest of linens would make more sense. The nest of linens is just what the body was wrapped in along with the linden leaves. I also looked up linden leaves and it is usually used to help with anxiety and a few other medical purposes so perhaps the leaves are just to decorate the body. Cardboard box I think is just the coffin, it is a child's cardboard box because a small child would be able to fit into it.
The part about the swings going back and forth with no one in them to me is just to show the emptiness of life without that child. I also thought it could be a ghost of the child swinging on the swings.
"As certain and invisible as Red scarves silking endlessly From a magician's hollow hat And the spectacular catastrophe Of your endless childhood." I just pictured this as a magician pulling endless amounts of red scarves out of his hat that are 'invisible' when you look directly into the hat. I also view the red scarves as representing blood. "Spectacular catastrophe Of your endless childhood." This part is what made me think it was a murder instead of a death and then a funeral procession because it was a catastrophe, an event that ended horribly. Also the endless childhood, I see as the child as a ghost. The child was never able to grow up or finish his full time in life. Also since he was never able to grow older, the child will forever be a child, like the poem said, and endless childhood.