Cliff swallow nests on the side of the I5 freeway bridge in San Diego. Two open baby bird beaks can be seen from a nest on the lower left. Photo taken in April 2025 on the coast to crest trail.

From April 2025: A walk on the coast to crest trail, by the the I5 freeway overpass. Cliff swallows were flying back and forth, from water to nests, feeding their young; here two baby birds can be seen, mouths wide open awaiting their meal. #sandiego #urbantrails #coasttocrestrrail