Effects of Aerial Application of Ddt on Reproduction in House Wrens and Mountain and Western Bluebirds (Classic Reprint) - Hardcover

McCluskey, D. Calvin

9780267043200: Effects of Aerial Application of Ddt on Reproduction in House Wrens and Mountain and Western Bluebirds (Classic Reprint)

Hardcover

ISBN 10: 0267043201 ISBN 13: 9780267043200

Publisher: Forgotten Books, 2018

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Excerpt from Effects of Aerial Application of Ddt on Reproduction in House Wrens and Mountain and Western Bluebirds

In 1975 there were no significant differences between clutch size for all three species in sprayed and control areas. There was no significant dif ference in success in hatching or fledging between sprayed and control areas for mountain bluebirds in 1975. There were differences for western blue birds and house wrens.

No significant differences in mortality rates of nestlings were detected in either 1974 or 1975; only deaths that might have been caused by ddt were considered.

Comparisons of the three measures of reproduction between years for mountain bluebirds revealed significantly lower success in hatching and fledging in 1975. The difference was not attributed to ddt since success in hatching was greater in sprayed areas.

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