Coating the feathers of the birds with oil makes the feathers heavy and enables the bird to fly. It also makes the birds feel hot as when heat and oil comes into contact, their feathers and body will gain heat. This may also result to death.
Penguins come to mind. They only live in the southern hemisphere. Very tiny birds like hummingbirds couldn't survive there as they would lose heat too fast.
yes
None. Birds need oxygen, as do we. Plus, the lack of an atmosphere on Mars would cause them to freeze, burn, and suffocate at the same time. The side facing the sun would burn, and the other side would freeze.
A good job to have to survive an economic depression would be anything that was necessary. Medical positions are still needed, jobs in the food industry would be wise as well. Government jobs are usually protected and stay heavily staffed all the time.
Many birds fly south for the winter this adaptation is called
Plants exist all over the earth. They need very little to survive. They were around long before birds, and they will probably be around long after birds and other forms of life are gone.
Probably up to 90 years or so. If it's kept in captivity, it would survive probably longer.
I am not sure exactly what "smart" would mean here. Hummingbirds have very small brains and are hot noted for their intelligence among birds. Birds that have been noted for their intelligence are crows and ravens . Basically, they are smart enough to survive in their environment and propagate. That is enough.
Well oiled men with spears, you would "conquer" them too.
Teflon, Ice or an oiled surface.
Yes it is possible through adaptation. Adaptation is the process in which animals change to fit their environment. This of course would not happen immediately, it would take time.
The poor would probably have used what they did in Medieval times, which was sliding or foldingwooden shutters, or oiled cloth or oiled paper, or even thin sheets of horn. Also, strips of linen soaked in oil.