Candling a red-winged blackbird egg to determine incubation stage
Detailed Description
Candling a red-winged blackbird egg to determine incubation stage (Inset: Parasitized red-winged blackbird nest)
Sources/Usage
Public Domain.
Candling a red-winged blackbird egg to determine incubation stage (Inset: Parasitized red-winged blackbird nest)
Public Domain.