referred to, a forest of aspen mixed with spruce and lodgepole pine,
and fringed with willows, forms a seemingly straight line of tall
trees

The principal constituents in the supply of animal food avail-
able for waterfowl are small fishes and gastropods. The fish popula-
tion includes Kamloops trout, Salmo gairdneri kamloops, Rocky Mountain
whitefish Prosopium williamsoni, fine-scaled sucker Catostomus cato-
stomus, and lake shiner Richardsonius balteatus. Shoals of the latter
were constantly in view in the shallows. Snail shells littered some
of the beaches, the species identified being Helisoma subcrenatum
(Carpenter) and Physella ampullacea (Gould). Other animal-food items
collected were amphipods, Chironomid larvae, damselfly and dragonfly
nymphs None of these was abundant. The only submerged food plant

found in any quantity was a pondweed Potamogeton heterophyllus

The nesting population, as determined for the entire lake, con-
sisted of two pairs of Holboell grebe, two pairs of mallard, and two
or three pairs of greater yellowlegs There is sufficient nesting
cover and food for a much larger population. The lake is a resting
and feeding place of some importance for transient grebe, certain
diving ducks and gulls. Observations of the numbers and behaviour
of these birds are set forth in a later section dealing with the
local migration.

Tiltzarone Lake: 1 mile long, 1/4 mile wide, is situated three-quarters
of a mile southwest of Puntchesakut Lake. At one time a small stream,
passing through the meadow referred to above, drained the lake into
Puntchesakut Creek; this stream is now dry. The shores of the lake

are boggy with sedge meadow, muskeg and other type of low-lying land,
some covered exclusively with thickets of dwarf birch, extending

inland from them An abandoned homestead is situated on the north

end of the west side and a settler lives near the southeast corner

of the lake. Higher portions of the surrounding land carry the pre-
vailing type of lodgepole pine, Engelmann spruce and aspen forest

The maximum depth is said to be 30 feet, and the water becomes
turbid with algal bloom in late summer. There is reported to be
Kamloops trout and suckers in the lake. Along the boggy shores for
most of its length is a narrow strip of marsh, comprising sedges,
tall grasses, spike rush and horsetail Equisetum sp. On May 15 the
flooded sedges, in favourable sunlit places, were about 10 inches
in height, and the leaves of yellow pond lily had grown upward to a
point about a foot below the surface of the water. Water moss is
perhaps the most abundant growth and is important in the economy of
the lake It harbours many aquatic insect larvae; loons and grebe
use it for nesting material, and it is the chief constituent in
muskrat houses Amphipods are abundant and this is probably the
reason why a relatively large number of diving ducks frequent the
lake The following are counts of the population: May 15; loon,

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