From January to June, what color are the starling's bills?

From January to June, what color are the starling's bills?

• A. Yellow
• B. Blue
• C. Red
• D. Green

Answer: (A)

Seasonal changes in bill color reflect breeding status in many songbirds. Starlings have a dark bill in winter, and as the breeding season arrives, hormonal changes cause the bill to turn bright yellow to help attract mates and defend territory. Because January to June encompasses the period when breeding occurs, the bill color you’d commonly see is yellow. The other colors don’t match the typical seasonal bill coloration pattern for starlings.

Seasonal changes in bill color reflect breeding status in many songbirds. Starlings have a dark bill in winter, and as the breeding season arrives, hormonal changes cause the bill to turn bright yellow to help attract mates and defend territory. Because January to June encompasses the period when breeding occurs, the bill color you’d commonly see is yellow. The other colors don’t match the typical seasonal bill coloration pattern for starlings.