Which introduced species is described as robin-sized, roosts on rooftops, and nests in protected openings in buildings?

Which introduced species is described as robin-sized, roosts on rooftops, and nests in protected openings in buildings?

• A. Pigeons
• B. Starlings
• C. Sparrows
• D. Robins

Answer: (B)

This item asks you to identify an introduced species based on its robin-sized body, rooftop roosting, and nesting in protected openings in buildings. The European starling fits perfectly: it’s about the size of a robin, was introduced to North America, and is famous for forming large roosts on building rooftops and ledges in urban areas. It also nests in protected openings within buildings—vents, gaps in walls, attics, and similar spaces. These traits together are distinctive, helping separate it from native birds or other introductions that don’t share the same rooftop roosting and building-nesting pattern.

This item asks you to identify an introduced species based on its robin-sized body, rooftop roosting, and nesting in protected openings in buildings. The European starling fits perfectly: it’s about the size of a robin, was introduced to North America, and is famous for forming large roosts on building rooftops and ledges in urban areas. It also nests in protected openings within buildings—vents, gaps in walls, attics, and similar spaces. These traits together are distinctive, helping separate it from native birds or other introductions that don’t share the same rooftop roosting and building-nesting pattern.