Cliff Swallows collecting mud
Along the southern edge of the Western UW Playing Field, large puddles form when there is plenty of rain. In this case the puddle formed in a rut made by a large tire. The mud seems to be just right in consistency for Cliff Swallows who are collecting mud for building their nests along cliff sides. Arlene Koziol has recorded with her camera, how they gather mud in large groups, in sync with each other. They bring these tiny pellets to their nesting site, up to half a mile away, adding to the nest rim of the mud construction they have "glued" to the cliff.
Please visit Arlene's Flickr site for a movie and an amazing sequence of photos.
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Gisela Kutzbach and contributors
Friends of the Lakeshore Nature Preserve
P.O. Box 5534
Madison, WI 53705
UW-Madison Lakeshore Nature Preserve website