The average normal body temperature is generally accepted as 98.6Â°F (37Â°C). Some studies have shown that the normal body temperature can have a wide range, from 97Â°F (36.1Â°C) to 99Â°F (37.2Â°C). A temperature over 100.4Â°F (38Â°C) usually means you have a fever caused by an infection or illness.
The neo-Gothic Swallow's Nest castle perches 130 feet (40 meters) above the Black Sea near Yalta in southern Ukraine.
Compare that to baby robins, which fledge when they are 14-16 days old and weigh over 50 grams! Swallows don't nest in trees. A swallow builds its nest on a barn rafter, bridge overhang, or other structure well off the ground. If a baby swallow doesn't make a strong first flight, it will crash on the ground. In order to survive this first flight, a swallow fledgling must have strong wings. That's why it starts exercising, flapping its little wings hard, by the time it's 9 days old.