Download 09 Tufted Puffin Productivity Protocol v1.2

Tufted puffin productivity, phenology and chick growth
From the above values, the following summary parameters are generated:
• Nesting success (D/B)
• Fledging success (F/D)
• Reproductive success (F/B)
Tufted puffin chicks often do not fledge before field crews leave islands at the end of the summer, so we
also calculate a maximum potential reproductive success that includes all chicks still present at last
check, even those too young to be called fledged (and thus excluded from conventional analysis). For
this, the database will also calculate:
• Nest sites w/ young chicks still present (H) – number of nest sites containing chicks too
young to determine if fledged or failed
From that, the following summary parameters are generated:
• Max. potential nesting success [(D+H)/(B+H)]
• Max. potential fledgingsuccess [(F+H)/(D+H)]
• Max. potential reproductive success [(F+H)/(B+H)]
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