The National Geographic Magazine, Volume 91National Geographic Society, 1947 - Geography Indexes kept up to date with supplements. |
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Page 215
... bird students . Those fortunate ones who have made the journey there , or ob- served the incredible concentration of sea birds in the Aleutians and the swarming gannets of Bird Rocks in the Gulf of St. Lawrence , have seen sights they ...
... bird students . Those fortunate ones who have made the journey there , or ob- served the incredible concentration of sea birds in the Aleutians and the swarming gannets of Bird Rocks in the Gulf of St. Lawrence , have seen sights they ...
Page 228
... birds that season , including practically all of the sandy areas and some of the grass flats . Allowing for varying density of birds per square yard , the average was three per unit . Therefore , there were somewhat more than 100,000 ...
... birds that season , including practically all of the sandy areas and some of the grass flats . Allowing for varying density of birds per square yard , the average was three per unit . Therefore , there were somewhat more than 100,000 ...
Page 548
... birds should be rewarded after each flight with a few grains of their choice feed . The pigeon's diet con- sists of leguminous seeds , cereal grains , green foods , and grit . Birds of Prey Often Attack Homers The principal birds of ...
... birds should be rewarded after each flight with a few grains of their choice feed . The pigeon's diet con- sists of leguminous seeds , cereal grains , green foods , and grit . Birds of Prey Often Attack Homers The principal birds of ...
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