NUMBERS OF WATERBIRDS AT A SWAMP IN FERNDALE, WESTERN AUSTRALIA, 1978 to 1981
| Posted: |
21/09/2021 |
| Author(s): |
Sarah H. Hnatiuk |
Weekly counts of waterbirds on a small swamp were made from January 1978 to May
1981. Three species accounting for 67% of the birds counted were the Eurasian Coot
(33% ), Pacific Black Duck (23%), and Grey Teal (11 % ). Greater numbers of birds were
observed during the summer months than at other times of the year. Species showing
significant seasonal variation in numbers were the Eurasian Coot, Pacific Black Duck, Grey
Teal, Australian Shelduck, and Little Black Cormorant; those with more constant numbers
throughout the year were the Hardhead, Dusky Moorhen, and Australasian and Hoaryheaded
Grebe. Variations between years in the pattern of fluctuating numbers were noted
and some of the variations may be related to events such as drought.
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