The five most numerous species recorded on the Fermilab Christmas Bird Count are respectively:-

		Avg. per Count		Fraction of total
1.	Canada Goose	15582		51.9%
2.	Mallard	3635		12.1%
3.	European Starling	2509		8.4%
4.	American Tree Sparrow	1048		3.5%
5.	Dark-eyed Junco	951		3.2%

Display a Plot showing how the contributions from these species to the total count has evolved over time.
Display the Fermilab site's version of this plot.

Display a Plot showing the evolution of the count composition after the contributions from the top 2 species have been removed.
Display the Fermilab site's version of this plot.

The next 5 most numerous species are :-

		Avg. per Count		Fraction of total
6.	House Sparrow	722		2.4%
7.	American Crow	644		2.1%
8.	Mourning Dove	581		1.9%
9.	Black-capped Chickadee	579		1.9%
10.	Rock Pigeon	576		1.9%

Display a Plot showing the evolution of the count composition after the contributions from the top 5 species have been removed.
Display the Fermilab site's version of this plot.