Marilyn-
The Action Plan For Australian Birds, published in 1992,(there may be an
updated version?) by the (then) Australian National Parks and Wildlife
Service has a very good summary 'list'. I would also add to the list
collisions with buildings and other structures, disorientation of migrants
by artificial light, and exotic disease. Nowhere does the literature cite
banding or canon-netting as significant sources of loss. Even if there were
small losses, of about the magnitudes discussed on this list, this impact
would rank at the bottom of your list,in terms of population effects, just
before collisions with space debris. If your grandchildren leave this in
the list, as is, you will have been encouraging them to indulge in yellow
journalism, not science.
Scott O'Keeffe
-----Original Message-----
From:
Behalf Of Marilyn Davis
Sent: 26 March 2001 12:53
To:
Subject: Bird threats List
Hi Birdo's
Is there a recognised list of bird threats and processes that affect
Australian birds? My twin grandchildren asked for a list, they are doing a
bird conservation project at their school so we sat down and made a list in
the order of importance as we recognised them to be.
We quickly realised there are many problems that affect one group of birds
and and not another, e.g. natural vegetation clearing does not affect many
migratory waders.
Many of the problems that we listed have been discussed on birding-aus. Our
list so far, not entirely in order of importance is;
1 Natural vegetation land clearing
2 Swamp reclamation
3 Mangrove reclamation
4 Overseas habitat destruction affecting our migratory bird feeding,
sheltering and nesting habitat
5 Controlled burning particularly during nesting season
6 Road Kills
7 Predation from cats and foxes
8 Duck Shooting
9 Agricultural and Horticultural bird pest destruction
10 Habitat destruction form overgrazing
11 Other feral predators such as rats and mice
12 Outback artesian bore drain and swamp destruction from capping bores
13 Toxic tailing dams at mines
14 Collision with overhead power lines near wetlands
15 Long line fishing
16 Feral animal competitors (e.g. rabbits graze food and protective cover)
17 Cannon netting and bird-banding
18 Out of balance native predators (silver gulls)
19 Out of balance native competitors (food and nesting sites)
20 Human disturbance at nesting colonies and sites
21 Bird skin collecting
22 Egg collecting
23 Trapping for aviculture
24 Accidental agricultural poisoning
25 Artificial water level management
26 Electrocution from power lines
27 Eradication of food source (e.g. Calici virus remove rabbits)
What other bird destructive threats have we missed? Any discussion on the
list so far?
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