Assertion: black legged kittiwake | /r/CapableOf | experience decline
Facets:
value: during the 2008 and 2013 surveys
type: TEMPORAL
value: in number
type: OTHER
value: to less than 20 000 individual
type: OTHER
Source sentences:
text: In contrast, the black-legged kittiwake experienced a decline in number from its peak of 47 000 birds in the 1980s to less than 20 000 individual during the 2008 and 2013 surveys.