Image from the Biodiversity Heritage Library.
Contributed by Museum of Vertebrate Zoology, University of California, Berkeley.
| www.biodiversitylibrary.org
Transcription
Field Notes
D.A. Bell
7 June 1990
ford in hill. Also found yet another Pelagic Cormorant egg. All eggs found today, except for its first cormorant egg, are really fresh. We hiked/climbed back down the trail off the top of Cox I. On beach at 17:50.
Decided to go back to original obs posts on small pinnacles SE of SE gully, and watch for Peregrines.
18:00 - at observation posts. 18:13 heard leaping scream and "shaley voice" call (similar to a courtship kestrel call).
Wayne said this call usually given in flight. 18:15- suddenly tiercel appeared in gully, landed high on ledge below tangle of roots (where the ledge with the scrape was)!
He started screaming, then went into an echup-echup,
launched off the ledge when we saw another falcon high over Cox I. heading E. The tiercel resident appeared to give chase, at another tierel. Both climbed and flew out first in direction of Iphigenia, then turned W out over strait, in direction of Fury Bay. Resident tiercl below & behind, gave a couple power climbs followed by nearly horizontal stops. The resident tiercel stayed pretty much below & behind, but when out 1 mi. he was ahead and below the intruder; gained height, turned and stooped at intruder, then intruder also stooped, and they crossed. At which point resident tiercel turned to return to Cox I. He did one more power up & horizontal stop. Intruder kept going towards Rhodis Pt. Wayne said resident often do power climbs & stops as display, and, if they're really paired, they'll echup-echup just before. The resident