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The image depicts bird population data from 1990 to 2010 in thousands, showing crows beginning at 0.7 in 1990, dipping to 0.6 by 1995, holding until 2000, then declining to 0.5 by 2005, reaching 0.3 in 2010; kookaburras starting at 0.3 in 1990, peaking slightly near 0.4 by 2000, dipping back to 0.3 by 2005, ending just above 0.2 in 2010; parrots starting at 0.9 in 1990, declining to 0.7 by 1995, then further dropping to 0.6 by 2000, reaching 0.4 by 2005, and stabilizing around 0.3 in 2010; whip birds maintaining just below 0.4 from 1990 through 1995, then declining gradually to under 0.1 by 2010; swallows starting just below 0.2 in 1990, rising slightly between 0.2 and 0.3 until 2000, then declining sharply to 0.1 by 2010.
Given the complexity of the image, the above description may not be entirely accurate.
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The pie chart provide data about the figure of birds in Wolli Park over the period from 1990 to 2010.
Overall, the highest rate in 1995 was parrots, whereas the lowest ratio was swallows in the same year. On the other hand, the number of kookaburras decreased in 2000, while the proportion of swallows increased in the same year, the rate of crows equals the number of kookaburras in the same year.
Looking into the details, the rate of whip birds was 0.45 in 1995, whereas it was 0.25 in 2010. In addition to that, the percentage of kookaburras went down from 0.8 to 0.4 in a period of 10 years, whereas the ratio of swallows grew from 0.1 to 0.2 between 2005 and 2010.
Looking at more details, the ratio of crows was 0.75 in 2000, while it was 0.6 in 2010, the amount of whip birds sank to the half, in a period of 20 years from 1990 to 2010.
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