Rudaw has a video of a helicopter delivering supplies provided by an Iraqi Kurdish charity to Mount Shingal today.
I don't think it can be embedded but the video is available here.
http://rudaw.net/...
There now seem to be three supply delivery efforts going on, the Iraqi Air Force working with the Turkish government, the US, and now the Iraqi Kurds.
The Syrian Kurds delivered supplies three and four days ago but I understand that they are now concentrating on getting the Yazidis off the mountain and into the areas in Syria which they control.