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- W2402683675 abstract "dius alba), Snowy Egret (Leucophoyx thula), Louisiana Heron (Hydranassa tricolor), Black-crowned Night Heron (Nycticorax nycticorax), and White Ibis (Eudocimus alba), all of which nested during the summer on and around an artificial duckpond on the north end of the island. The heronry consists of a number of small islets in the middle of a pond which had only a small amount of open water, the rest being filled with cattails and other marsh plants. The nests were built on trees growing close to the edge of the water on these islands. There was no choice of particular plant species in which to build a nest. Trees (both pines and hardwoods), shrubs, vines, and even matted tangles of herbs, vines, and brambles were used as nest sites. The study was begun in the middle of April, as soon as the birds began to construct their nests, and was continued until September, when most of the nesting activity had ceased. The heronry was visited by canoe once a week early in the morning. Four islets were selected for study. At the start of the work every nest built on these islets was followed until it was either destroyed or the young birds left. Later in the season many nests on the largest islet were left unstudied for lack of time. White Ibis began to nest last and thus only a small percentage of their nests were followed. Each study nest was marked with paint on a nearby branch for identification. The eggs were counted and weighed and the young when they hatched were counted and weighed, and finally banded. Thanks are due to Herbert W. Kale II for assistance. RESULTS Common Egret.-The Common Egret began to nest around the first of April, and 43 nests were marked and followed to the successful fledging of young or destruction of the nest. A rather large number of these nests, eight of 43, were destroyed before any eggs were laid. This resulted both from the insecure nest sites often chosen by this rather large, heavy bird, and the destruction of nests by animals searching for eggs. A large number of the nests that were destroyed after laying had been completed (but before hatching) were on one islet which was invaded by raccoons. In contrast to other areas, the nests which had been destroyed on this islet were not rebuilt. There were four nests in which the completed clutch consisted of two eggs," @default.
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- W2402683675 date "2016-01-01" @default.
- W2402683675 modified "2023-09-27" @default.
- W2402683675 title "NESTING SUCCESS OF EGRETS AND HERONS IN" @default.
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