64 THIRD FLOOR, WEST CORRIDOR 
familiar sound on the northern New England lakes. Many loons pass the 
winter at sea fifty miles or more from land. (Reproduced from studies at 
Lake Umbagog, New Hampshire. ) 
This rocky island thirty miles from shore in the Gulf of St. Lawrence 
affords some protection to the sea birds which still nest in 
great numbers on and in its cliffs, although the colony is a 
mere shadow of what it was even fifty vears ago. Seven 
Bird Rock 
Group 
species are shown nesting in the group. Namely the razor-billed auk, 
petrel, gannet, puffin, Kittiwake gull, common murre and _ Briinnich’s 
murre. (Reproduced from studies at Bird Rock, Gulf of St. Lawrence.) 
[A description of the Bird Rock Group is given in Guide Leaflet No. 1.] 
[Return to the South Pavilion containing the apes and monkeys. | 
WEST CORRIDOR 
LocaL Brrps 
Returning to the South Pavilion where the monkeys are and passing to 
the right, we enter the West Corridor containing the collection 
pried of local birds. At the south end of the corridor are several 
ollection 
of Birds cases in which the birds are changed each month to represent 
the bird life of the parks of the city. This exhibit is particu- 
larly useful for teachers and to those desiring to identify the birds which 
they see out of doors. Other exhibits which will appeal to the bird student 
are those showing types of feet, bill, wings and feathers. Variation of a 
species, that all important factor of evolution, is here illustrated in the 
geographical variation in size and color of the song sparrow. [See Guide 
Leaflet No. 22.] 
The group near the stairway showing the feeding habits of birds, empha- 
sizes the remarkable manner in which the bill of the bird is 
adapted to secure food. For instance the humming bird 
which feeds to a considerable extent on the nectar of flowers, 
has a long, slender bill; the birds of prey like the owl or hawk, have short, 
curved bills for tearing flesh; the seed-eating birds like the parrot, have 
thick, heavy bills, while the water-feeding birds like the duck, have broad, 
spoon-shaped bills. 
The collection of Auduboniana, or objects relating to the life and work 
of John J. Audubon, occupies the stairway wall. It com- 
Bird Feeding 
Group 
Auduboniana . Ca . ; 
prises original sketches and drawings of Audubon and his 
sons and was presented to the Museum by his granddaughters. 

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