Researchers looked at metabolic markers in the blood of 30 Humboldt penguins nesting in the Punta San Juan Marine Protected Area in Peru. The scientists discovered metabolic differences between penguins nesting in sheltered burrows and those in more exposed areas. Nesting success is critical to the Humboldt penguins' survival as a species.
The current study analyzes social and life-history data from several thousand songbirds, including 127 corvids, the family that includes jays, crows, ravens, and magpies. Results show that corvids are unusual in having larger brains and 'extended childhoods,' where parents provide the young with a safe haven to learn and practice skills they need to survive […]
After a severe drought gripped the Prairie Pothole Region of the U.S. and Canada in the 1980s, populations of almost all dabbling duck species that breed there have recovered. But not northern pintails. Now, a new study suggests why -- they have been caught in an ecological trap.