the charts shows the number of birds in Wollai Park between 1990 and 2010 Summerize the information by selecting and reporting the main features, make comparisons where nessesary

The diagram illustrates the

number

of bird

species

in Wollai Park in 20 years between 1990 and 2010.

Overall

,

while

the graph exhibits frequent oscillations between 5 types of

birds

, most of the

number

of every bird

species

generally decreases at a certain level.

Nevertheless

, some roughly plateaued at the same amount

at the end

, and some dwindled significantly. On the one hand, the parrots and the swallows seem to be maintained at the initial amount.

Initially

, the parrots'

population

was between 0.8 and 0.7 and virtually the same in 2010,

however

, the

population

met its apex around 1995 at 900

birds

, keeping themselves to be the largest in the pool of bird

species

- after exceeding the Kookaburras and crows between 1990 and 1995. In the case of the swallows, not only did it continue to be the lowest in the numbers of the

species

,

while

the

population

was between 300 and 200

birds

and reached its lowest in 2005 with 100

birds

, it returned to 200

birds

in 2010.

On the other hand

, the

number

of crows has decreased consistently and lost 300

birds

in the 20-year interval, with its initial amount reaching 900

birds

as the highest

number

in 1990. The kookaburras ,

nevertheless

, lost twofold of what the crows have lost with the same starting

number

of the

population

. Interestingly, in the whip

birds

’ cases, it lost 40% of its

population

, making it having less than 300

birds

in 2010.