34  Seabird Diet

Description Seabird diet composition during the breeding season often tracks marine environmental conditions and reflects production and availability of forage within regions of the CCE. We present seabird diet data from the northern and central regions to help shed light on foraging conditions on an annual basis.

Indicator Regions

NoCC; Destruction Island, WA

• Species:
  • Rhinoceros auklet diet - Anchovy
  • Rhinoceros auklet diet - Herring
  • Rhinoceros auklet diet - Rockfish
  • Rhinoceros auklet diet - Sandlance
  • Rhinoceros auklet diet - Smelt
• Component Category: Seabirds
• Time Range: 2008 - 2025
• CCIEA Data Contact: tom.good@noaa.gov
• Institution: NOAA NWFSC
• Source Data: Data from Washington Rhinoceros Auklet Ecology Project; contact tom.good@noaa.gov before citing or distributing these data
• Additional Calculations: Diets of rhinoceros auklet chicks (% occurrence) calculated from bill loads of returning adults to the colony at Destruction Island, WA.
• Download data: csv file

NoCC; Yaquina Head, OR

• Species:
  • Common murre diet - Flatfish
  • Common murre diet - Herring/Sardines
  • Common murre diet - Rockfish
  • Common murre diet - Sandlance
  • Common murre diet - Smelt
• Component Category: Seabirds
• Time Range: 1998 - 2025
• CCIEA Data Contact: tom.good@noaa.gov
• Institution: OSU Seabird Oceanography Lab
• Source Data: Data from Hatfield Marine Science Center Seabird Oceanography Lab Yaquina Head Seabird Studies; contact Rachael Orben (Rachael.Orben@oregonstate.edu) before citing or distributing these data.
• Additional Calculations: Diets of common murre chicks (% occurrence) observed as bill loads of returning adults to colonies at Yaquina Head, OR.
• Download data: csv file

CeCC; Farallon Islands, CA

• Species:
  • Brandt’s cormorant diet - Anchovy
  • Brandt’s cormorant diet - Rockfish
  • Cassin’s auklet diet - Euphausia
  • Cassin’s auklet diet - Mysids
  • Common murre diet - Anchovy/sardine
  • Common murre diet - Rockfish
  • Common murre diet - Salmon
  • Pigeon guillemot diet - Rockfish
  • Rhinoceros auklet diet - Anchovy
  • Rhinoceros auklet diet - Rockfish
• Component Category: Seabirds
• Time Range: 1987 - 2025
• CCIEA Data Contact: tom.good@noaa.gov
• Institution: Point Blue Conservation Science
• Source Data: Data from Point Blue Conservation Science collected on Southeast Farallon Island in collaboration with the Farallon Islands National Wildlife Refuge (USFWS); contact Dr. Jaime Jahncke (jjahncke@pointblue.org) before citing or distributing these data.
• Additional Calculations: Diet is percent occurrence of fish species in the diets of adult birds that are provisioning chicks calculated from bill loads of adults returning to the colony at Southeast Farallon Island, CA.
• Private dataset, no download available

References