G
How hummingbirds live at high altitudes
"New research finds that hummingbird species living at high altitudes have independently evolved hemoglobin with enhanced oxygen-binding properties so they can thrive in oxygen-poor environments."
#birds #ecology #physiology #evolution https://grrlscientist.medium.com/how-hummingbirds-live-at-high-altitudes-69b4761069b1
Step-By-Step Evolution Of A Chemical Weapons System By Poison Frogs
Poison frogs appear to have built their chemical defenses gradually: related frogs store low to moderate levels of diet-derived alkaloids, whilst poison frogs store more and could chemically modify them.
#PoisonFrogs #Evolution #ChemicalEcology #defense https://www.forbes.com/sites/grrlscientist/2026/04/30/step-by-step-evolution-of-a-chemical-weapons-system-by-poison-frogs/
How Can Overwintering Bumblebee Queens Survive Underwater?
"A lab accident serendipitously revealed that bumblebee queens can live underwater for up to a week."
#Bumblebees #physiology #ecology #Diapause #metabolism https://grrlscientist.medium.com/how-can-overwintering-bumblebee-queens-survive-underwater-3f868764c6bd
