The Extreme Breeding Ecology of Cliff-nesting Swifts
A Common Swift glides through golden evening light—briefly grounded in its breeding season before returning to a life spent almost entirely in the air. © Marcin Sidelnik
Breeding and Life-cycles

The Extreme Breeding Ecology of Cliff-nesting Swifts

Cliff-nesting swifts defy gravity—and ecological convention. This article explores how these aerial specialists adapted to breed in some of the planet’s most inhospitable vertical landscapes.

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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
Real-Time, Real Impact: Revolutionary Bird Tracking with Interrex’s UBILINK
A Northern Lapwing is being carefully processed for research before release. Studies like this provide vital data on migration and survival. © Eunbi Kwon, Department of Ornithology, Max Planck Institute for Biological Intelligence

Real-Time, Real Impact: Revolutionary Bird Tracking with Interrex’s UBILINK

Satellite technology is evolving fast – Interrex’s UBILINK system offers a game-changing solution for high-resolution, remote wildlife tracking.
Fieldwork and Technology
The Ornithologist

The Ornithologist