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nest placement
Vistula River
2
floods
2
riverine birds
2
shorebirds
2
AGE
1
BILL SIZE
1
Biology (General)
1
Biology and Life Sciences
1
CHICK GROWTH
1
MAINTENANCE
1
NEST-SITE CHARACTERISTICS
1
PREDATION
1
QH301-705.5
1
STONE THEFT
1
SUCCESS
1
colonial breeding
1
egg size
1
flipper length
1
hatching date
1
hatching success
1
nest size
1
penguins
1
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