Cahn-—Notes on the Yertehrate Fauna 
489 
SUMMER AVIFAUNA. 
Homed Grebe. Colymhus auritus Linn. 
A single specimen on the Kenton river is the only record the 
writer has; reported also from Iron county. 
Pied-billed grebe. Podilymbus podiceps (Linn.) 
This is the only member of the grebe family observed. Two 
individuals only were seen, one on the river at Kenton, the other 
on Lake 33. Prom all indications and reports, a regular summer 
resident, and very likely a breeding species. 
Loon. Gavia immer (Briinich). 
An abundant summer resident on nearly all of the lakes hav¬ 
ing shores aifording possible nesting sites. At Lake 16 a pair 
was observed followed by its family of two well grown birds. 
They were all extremely shy, diving as the boat approached, and 
their whereabouts were carefully concealed until the boat was 
nearly to the other end of the lake. A single pair to the smaller 
lakes is the rule, and on the larger lakes seldom more than two 
pairs at a time. When rising from the smaller lakes it is neces¬ 
sary for the bird to circle the lake as many as five or six times 
before it has speed enough to clear the encircling inpes. 
Herring Gull. Larus argentatus Pontoppidan. 
A number of individuals were seen at various times over Lake 
33, where they were feeding on the large shiners (Notropis cor- 
nutus) abundant therein. 
Merganser. Mergus amenicanus Cassin. 
A single mature male fiew low over camp at Lake 33 on August 
15, this being the only specimen seen. 
Red-breasted Merganser. Mergus s err at or Linn. 
A flock of seven was seen on the river at Kenton, where they 
were swimming rapidly up-stream. Two individuals flew over 
Lake 33 just after sunset on August 16. Blackwelder gives the 
bird as a breeding species, but the writer found no evidence of 
breeding in that portion of the county which he investigated. 
