Image from the Biodiversity Heritage Library.
Contributed by Smithsonian Institution Archives.
| www.biodiversitylibrary.org
Transcription
R.D.Brossin
Lee wards #13 - Species Account
1906
Sooty tern
Tayuan
20-21
June
The birds have now spread nearly
around the entire island. Only on
the N point are there 220 terns.
Colonies are much more extensive
than last August. There could
safely be 2,000,000 terns on the
island.
R.D.Brossin
Lee wards #13 - Species Account
1906
Gray-backed tern
Tayuan
10.16t
20-22/1
June
Widely scattered over the entire
island wherever Sporeia is present-
along the sea beach and especially
so along the central lagoon. Considerable
numbers also nest beneath Sea cucumbers.
Nesting cycles range from 1/2 incubated
egg to full fledged - flying immature. The
majority of birds have advanced numbers
eggs or nearly hatched chicks. Large
numbers (of several hundred) congregate
in the open areas such as along the
dried out flats along the central lagoon
and in the bare sandy areas at
N + S. ends of the island. Nesting
pairs are more separated than Sooty
terns which may nest with 6-8
miles of one another.
Very difficult to estimate population
on this species, but conservatively I
would guess it lies between 10 and 20
thousand.