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They glide in circles alternating quick wing flaps and glides. They have a rich throaty voice that is pleasant to hear. Martins are exclusively cavity dwellers, relying mainly on man for their housing. Spring migration is the movement of Purple Martins from their wintering lands in South America to their breeding territories in North America and Canada. This migration has begun, enthusiast report martin sightings to many organizations devoted to the preservation of the species. are more elaborate. Martins engage in an interesting behavior that begins • soon after the nest is completed, both the male and the female can be seen gathering green leaves from nearby shrubs and trees. They usually line their nest cup with these green leaves. They normally continue this until the eggs hatch. Researchers have tried to explain this and some believe that the fresh leaves add moisture to the eess to helD durine
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