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Or to take your question more literally: "How common is avicide,
e.g. among Australian Magpies". Yes magpies occasionally kil and eat adults of
other birds (I've read about eastern rosella & sparrow) and possibly chicks
in a nest, though not a regular, they are after all close relatives of
bucherbirds & currawongs, that do it all the time). So that is
avicide.
As for "What other waterbirds may predate the young of all
members (or maybe to be fair, "any" or just those that live in the same area) of
the Rallidae?" Surely the Purple Swamphen does or would, given a chance, also
Gulls, Cranes, Storks, Ibis, Herons, Egrets, Darters, the list goes on and on.
Other local regular predators of the young of the Rallidae are Swamp
Harrier & Whistling Kite, etc.............
Philip
The
male Musk Duck (Biziura lobata) is said to predate its own young. What does
HANZAB say? What other nestlings / immatures is it known to predate? Fratricide
has been used to describe Kookaburra nestlings killing siblings, so when an
adult bird kills and eats its own young is that avicide? How common is avicide,
e.g. among Australian Magpies and Black Swans? What word best descibes this
situation? What other waterbirds may predate the young of all members of the
Rallidae?
Bill Graham
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