steep sand wall with nests bank swallows riparia |
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| navigate by keyword : access and avifauna bank banks biotope bird burrows caves cliff deposition different drenthe dug dunes erosion landscape landschap layers nature nest nests out quarry riparia sand sandy soil steep swallows types zandafgraving |
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| Steep sand bank with different types of soil layers and nest Burrows of Bank swallows, Riparia riparia |
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