Sandwich-types and hybrids photo gallery
- I finally dug out all my photos of presumed Elegant x Sandwich Tern
hybrids that I've managed to photograph in San Diego since 2007:
Similar birds have been documented on Isla Rasa in the Gulf of
California where the majority of Elegant Terns breed:
The flickr set also contains two Sandwich-types with smudgy yellow bill
tips (one also with some yellow visible along the tomium on the closed
bill) that the CBRC does not accept as pure Sandwich do to concerns that
they might be F2 back-crosses with a Sandwich. The other possibility is
they are good Sandwich Terns showing introgression from the
yellow-billed subspecies of Sandwich Tern known as "Cayenne" Tern.
An excellent photo by Jimmy McMorran of a more recent Sandwich-type
found in San Diego County is here:
A very pure looking Sandwich Tern was documented breeding in Orange
County in the 1990's:
A much nicer color photo of presumably the same bird in 1997 can also be
seen in the CBRC book.
This article documents a Sandwich Tern (or rather the bill tip of one)
on Isla Rasa in 2008:
The two birds mentioned above had small and sharply defined yellow tips
to their bills so we know there is at least one or a few good looking
Sandwich Terns floating around on the Pacific coast north of Oaxaca.
It would be nice to see a large selection of photos of Sandwich Terns
from the Pacific coast from Oaxaca to Peru. If anybody knows of any
leads please let me know.
Chula Vista, CA