| Notes |
- Water may be physically inaccessible for a variety of reasons, including
ice covering the water source, the whole water source being frozen,
water being out of reach behind a barrier which the animal is unable to
penetrate, or the animal being trapped in an entangling object out of
reach of water.
- N.B. water also may be psychologically inaccessible, e.g. to
subordinate individuals when aggressive individuals do not allow them to approach the
water.
- Oiled birds may have their normal fresh water source
made inaccessible due to loss of plumage integrity making it impossible
for them to fly to fresh water.
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