Identifying Females
The differences between female winter residents and spring migrants are subtle, and difficult to see from a distance. Only bird-banders have the opportunity to capture and examine birds up close.
![hanging the feeder outside the classroom](https://s3.us-east-2.amazonaws.com/journeynorth.org/images/graphics/humm/ruby_female_joangarvey_600.jpg)
Photo: Joan Garvey |
Photo:
Meret Wilson
|