From an AF POV and an IQ POV I found the 1D4 / 5D3 to be very similar quality.
So it's a tough question. When you say "night photography" are you talking about astro? If so you might want to ask the astro shooters,.
Also if you really like wide angle lenses, go for the FF 5D3. Unlike APS-C sensor bodies,. the APS-H sensor size in the 1D4 means you can not take advantage of low cost high quality EF-S lenses. Your FF lenses will not be as wide angle.
for bird photography, I would chose the 1D4.