Each piece of baggage in excess of the free baggage allowance specified above that is not in excess of 62 inches (L+W+H) and 50 lbs. or less will be accepted for a charge of $75.00 per item one-way.
Best Answer: The standard is 10 to 12 hours a night. This is normally what birds sleep...seasonally a little more or less, depending on daylight hours. Most birds sleep when it is dark. In the wild, dark means danger.
You might also want to read about the life expectancy of birds. Most songbirds will lay an egg a day. They sit on their eggs for 12-14 days. The baby birds are able to leave the nest about 14 days later and can fly a few days after that. Robin eggs are a solid pale bluish-green. This is the most common egg you will find in your yard. The book shown below has many color photos of bird eggs.