Ross Kemp Extreme World-Juarez Mexico

Hi this is to anyone that watched Episode 3 where Ross Kemp was in juarez, now this thread is not about how fantastic the programme is, its more for any of you that still have this on your (Sky+,V+ or other type of PVR)
I literally just finished watching and right at the end when Ross is summing things up I noticed (what looked like a bird) fly quite far behind him, What got me was the shadow it cast, I rewound and watched a number of times and I'm puzzled as its a massive shadow on the buildings and in the end I'm not sure what it is.
If you've still got this episode check it out and let me know what you think it is.

Its at 56:24


I've just watched again and that thing is huge, also (maybe coincidence) but look for the flash coming from the hills as it flies down.


Edit: at the above time watch from the top right of the screen