Insect ID - possibly black honeybees?

Hi everyone,
Earlier today I spotted what I thought was a hoverfly on one of the pond plants - Ranunculus flammula (Lesser spearwort). I then spotted another on a Californian Poppy. I didn't think the photos would come out very well as I still haven't figured the extreme close up setting but they came out much better than I thought:
I've attempted to find out which type of hoverfly they are but it seems that they could be a black honeybee? Just wondering if anyone might have an idea if that's correct or if not which type of hoverfly it could be?
Lucid
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It is a fly because of the stubby antenae. It looks like the hoverfly Eristalis pertinax.
http://bioref.lastdragon.org/Diptera/Eristalis_pertinax.html
It looks like a narcissus bulb fly but unless you are a real expert in flies so many of them look so similar
Thanks for the replies. I think it's definitely a type of eristalis hoverfly but there are so many varieties it's difficult to tell which one.
Lucid