Report of the state-wide bird count, May 4, 1968
Explore the source record for details and available documents.
Maryland Birdlife↗
Geology topics
W.T. Van Velzen
Publications and source records attributed to W.T. Van Velzen.
Migration of a downy woodpecker
Explore the source record for details and available documents.
Maryland Birdlife↗
Field List of the Birds of Maryland
Explore the source record for details and available documents.
Maryland Avifauna (Maryland Ornithological Society↗
The Breeding Bird Survey in Georgia, 1966
Explore the source record for details and available documents.
Oriole↗
The 1966 breeding-bird survey in New York
Explore the source record for details and available documents.
Kingbird↗
Report of state-wide bird count, May 6, 1967
Explore the source record for details and available documents.
Maryland Birdlife↗
Maryland nest summary for 1966
Explore the source record for details and available documents.
Maryland Birdlife↗
First observed brown creeper nest in Maryland
Explore the source record for details and available documents.
Maryland Birdlife↗
Maryland's first Baird's sparrow
Explore the source record for details and available documents.
Maryland Birdlife↗
Maryland's third record of clay-colored sparrow
Explore the source record for details and available documents.
Maryland Birdlife↗
Maryland Birdlife index, volume 14-20, 1958-1964
Explore the source record for details and available documents.
Book↗
The changing seasons - and changing times
Explore the source record for details and available documents.
Audubon Field Notes↗
Operation recovery in Maryland
Explore the source record for details and available documents.
Maryland Birdlife↗
Maryland's part in the 1966 Breeding Bird Survey
Explore the source record for details and available documents.
Maryland Birdlife↗
Maryland nest summary for 1965 and 10-year recapitulation
Explore the source record for details and available documents.
Maryland Birdlife↗
Das amerikanische Bird-Banding Program
Explore the source record for details and available documents.
Die Vogelwarte↗