. Abstract of the proceedings of the Linnaean Society of New York City, for the official year .. Linnaean Society of New York; Natural history. 48. Dark Line Encloses Area On Which Annual June Census Was Taken. Changes ix the: Bipd Life: of the Elizabeth Region It has been the writer's observation that, taking Northern Union County as a whole, there" has been a decided decrease in the total native breeding birds^ due to the extension of urban developments and to the ditching and diking of the salt marsh. In sections of the uplands undisturbed or only "partly cultivated the bird popul
. Abstract of the proceedings of the Linnaean Society of New York City, for the official year .. Linnaean Society of New York; Natural history. 48. Dark Line Encloses Area On Which Annual June Census Was Taken. Changes ix the: Bipd Life: of the Elizabeth Region It has been the writer's observation that, taking Northern Union County as a whole, there" has been a decided decrease in the total native breeding birds^ due to the extension of urban developments and to the ditching and diking of the salt marsh. In sections of the uplands undisturbed or only "partly cultivated the bird population has. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Linnaean Society of New York. [New York] : The Society
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