Liberty

–noun, plural -ties.
1.
freedom from arbitrary or despotic government or control.
2.
freedom from external or foreign rule; independence.
3.
freedom from control, interference, obligation, restriction, hampering conditions, etc.; power or right of doing, thinking, speaking, etc., according to choice.
4.
freedom from captivity, confinement, or physical restraint: The prisoner soon regained his liberty.
5.
permission granted to a sailor, esp. in the navy, to go ashore.
6.
freedom or right to frequent or use a place: The visitors were given the liberty of the city.
7.
unwarranted or impertinent freedom in action or speech, or a form or instance of it: to take liberties.
8.
a female figure personifying freedom from despotism.
—Idiom
9.
at liberty,
a.
free from captivity or restraint.
b.
unemployed; out of work.
c.
free to do or be as specified: You are at liberty to leave at any time during the meeting.

Reference: http://dictionary.reference.com/browse/liberty

Tyranny

–noun, plural -nies.
1.
arbitrary or unrestrained exercise of power; despotic abuse of authority.
2.
the government or rule of a tyrant or absolute ruler.
3.
a state ruled by a tyrant or absolute ruler.
4.
oppressive or unjustly severe government on the part of any ruler.
5.
undue severity or harshness.
6.
a tyrannical act or proceeding.

Reference: http://dictionary.reference.com/browse/tyranny

Feral

A feral organism is one that has escaped from domestication and returned, partly or wholly, to a wild state. The introduction of feral animals or plants to their non-native regions, like any introduced species, can disrupt ecosystems and may, in some cases, contribute to extinction of indigenous species. However, returning lost species to their environment can have the opposite effect, bringing damaged ecosystems back into balance.

Reference: http://en.wikipedia.org/wiki/Feral

The Sense of Smell and Bird Noses

Whether birds have a sense of smell or not has been a much debated question by ornithologists. Modern data based on experiments and anatomy of both the nasal cavities and the olfactory lobes of the brain suggest that most birds have practically no sense of smell. The exceptions are Kiwis which have poor eyesight and hunt worms using their sense of smell. Several species of tubenoses which can detect the smells of fish oils floating on the surface of the sea, allowing them to find schools of fish or anchovies because their messy feeding causes an oily scum to form on the surface of the sea. The third group of birds definitely known to use smell to locate food are the vultures - both old world and new world species have been shown to find carcasses by smell to varying degrees. Other groups of birds with well developed olfactory lobes, but for which the actual evidence of the use of smell to locate prey is lacking, include various waders, many water birds, nightjars and swifts.

Reference: http://www.earthlife.net/birds/smell.html