It must have been the unaccustomed cold February weather in Houston, 4°C with a strong windchill. This American Robin just stayed still as we walked by, allowing an easy photograph.
From the distribution map at the above reference, Houston is at the northerly end of this migratory bird’s winter range – so it may well have been struggling with the cold.
Like everything in the US, the American Robin is larger than the robins we have in the UK (European Robin). Although its red breast is remarkably similar, this American bird is actually not a robin in the European sense, but a member of the thrush family.
Distribution map by Ken Thomas via Wikimedia Commons