There are two types of atomic bonds-ionic bonds and covalent bonds. They differ in their structure and properties. Covalent bonds consist of pairs of electrons shared by two atoms, and bind the atoms in a fixed orientation. Relatively high energies are required to break them (50â-â200 kcal/mol).
Hummingbirds fly by day when nectar sources such as flowers are more abundant. Flying low allows the birds to see, and stop at, food supplies along the way. They are also experts at using tail winds to help reach their destination faster and by consuming less energy and body fat. Research indicates a hummingbird can travel as much as 23 miles in one day.
Hummingbirds are busy little birds! Their hearts beat at over 1,263 beats PER MINUTE. Did you know that at night, they enter TUPOR which means they can rest and drop their heart rate to 50 beats a minute to conserve energy? How many times does a hummingbird's wings beat per SECOND? Those little winged wonders flutter their wings at a remarkable 80 times per second! They do NOT flap their wings, they rotate them in a figure 8, which makes it even more remarkable! That also enables them to go BACKWARDS in the air and to hover in ONE SPOT!