lighter or the same

[ambassabuild]

A lorry with a sealed load of birds is making a short journey, the driver encounters a steep hill ,when half way up realises he is not going to make it due to the weight of the birds, he has the bright idea of banging on the side of the lorry to make the birds fly, thus thinking it will be lighter therefore getting up the hill?? yes or no

[Rev. Green]

Perhaps the oxygen cylinders sealed in with them, or the small, nuclear, gas re-processing plant, will keep them going for a while.

[ambassabuild]

It's good when the answers expand, and massive when the questions expand. I think the Rev says it all and more , cheers!
Nice One
P.S I did say a short journey notafish I'm not that cruel,

[Marijn]

They could die if the lorry is crammed full of birds, rather than just a few birds. And how short is a short journey?
Just a word of caution before you try a practical experiment. :-)