• PGN0033
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  • PGN0033. (SCH89) emperor penguin Aptenodytes forsteri chicks call to parents for food, parents can recognize chick’s call among 50,000 birds, Antarctica (drum scan)
  • PGN0034
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  • PGN0034. emperor penguin Aptenodytes forsteri chicks call to parents for food, parents can recognize chick’s call among 50,000 birds, Antarctica
  • PGN0035
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  • PGN0035. emperor penguin Aptenodytes forsteri chicks call to parents for food, parents can recognize chick’s call among 50,000 birds, Antarctica
  • PGN0036
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  • PGN0036. emperor penguin Aptenodytes forsteri chicks call to parents for food, parents can recognize chick’s call among 50,000 birds, Antarctica
  • PGN0037
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  • PGN0037. emperor penguin Aptenodytes forsteri chicks call to parents for food, parents can recognize chick’s call among 50,000 birds, Antarctica
  • PGN0038
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  • PGN0038. emperor penguin Aptenodytes forsteri chicks call to parents for food, parents can recognize chick’s call among 50,000 birds, Antarctica
  • PGN0039
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  • PGN0039. emperor penguin Aptenodytes forsteri chicks, parents can recognize chick’s call among 50,000 birds, Antarctica
  • PGN0040
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  • PGN0040. emperor penguin Aptenodytes forsteri chicks, parents can recognize chick’s call among 50,000 birds, Antarctica
  • PGN0041
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  • PGN0041. Adelie penguin Pygoscelis adeliae rookery, Cape Royds, southernmost colony of penguins, Antarctica
  • PGN0042
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  • PGN0042. Adelie penguin Pygoscelis adeliae rookery, Cape Royds, southernmost colony of penguins, Antarctica
  • PGN0043
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  • PGN0043. Adelie penguins Pygoscelis adeliae rookery, one parent broods eggs while mate forages 9 to 25 days, Cape Bird, Antarctica
  • PGN0044
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  • PGN0044. Adelie penguins Pygoscelis adeliae rookery, one parent broods eggs while mate forages 9 to 25 days, Cape Bird, Antarctica
  • PGN0045
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  • PGN0045. Adelie penguins Pygoscelis adeliae at rookery, starving parents seek access to sea to feed but are fearful of leopard seals Hydrurga leptonyx, Cape Bird, Antarctica
  • PGN0046
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  • PGN0046. Adelie penguins Pygoscelis adeliae at rookery, starving parents seek access to sea to feed but are fearful of leopard seals Hydrurga leptonyx, Cape Bird, Antarctica
  • PGN0047
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  • PGN0047. Adelie penguins Pygoscelis adeliae at rookery, starving parents seek access to sea to feed but are fearful of leopard seals Hydrurga leptonyx, Cape Bird, Antarctica
  • PGN0048
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  • PGN0048. Adelie penguins Pygoscelis adeliae at rookery, starving parents seek access to sea to feed but are fearful of leopard seals Hydrurga leptonyx, Cape Bird, Antarctica