Breeding and Life-cycles

Dive into the reproductive strategies and life stages of birds — from courtship displays and nest building to egg laying, chick development, and parental care. This section explores the diverse breeding systems, seasonal cycles, and survival challenges birds face throughout their lives, offering insight into how life begins, unfolds, and is sustained in the avian world. Photo by Deborah Bifulco.

Same Species, Different Clocks: Migration That Shapes Reproductive Timing in Birds
A Dark-eyed Junco (Junco hyemalis oreganus) in the fresh light of spring. While this species isn’t featured in the study, it serves as a reminder of how migration and seasonal timing weave together in the lives of birds across latitudes. © Ilya Povalyaev

Same Species, Different Clocks: Migration That Shapes Reproductive Timing in Birds

Why do some birds get ready to breed while others are still preparing to migrate—despite living in the same place? The answer lies in how they sense time.
Breeding and Life-cycles
The Ornithologist

The Ornithologist