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

		Avg. per Count		Fraction of total
1.	Canada Goose	15904		52.6%
2.	Mallard	3425		11.3%
3.	European Starling	2552		8.4%
4.	American Tree Sparrow	1070		3.5%
5.	Dark-eyed Junco	936		3.1%

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	709		2.3%
7.	Black-capped Chickadee	596		2%
8.	American Crow	588		1.9%
9.	Mourning Dove	581		1.9%
10.	Rock Pigeon	534		1.8%

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.