Hummingbirds: Considerations for tree care providers in western North America

Female Allen’s with fledglings by Peggy Honda. by Gillian MartinBrazen, dazzling and confounding. How else would you describe a hummingbird? Just for fun weigh two pennies in your palm. On average, hummers weigh even less. And this is true. They flap their wings 200 times per minute. How? By investing 30% of their body weight in flight muscles. To supply … Read More

Why Change our Minds about Birds we are Inclined to Hate

by Gillian Martin Did a person but know the value of an enemy, he would purchase him with pure gold    —Raunci Have you spent time looking for family members on genealogy websites? It’s great fun, isn’t it, to discover look-alikes and common traits among newly discovered relatives. There are birds likely around you every day that are related…but perhaps you were … Read More

Taking the ‘defect’​ out of tree risk-benefit management strategies

Photo by Joe Galkowski By Acer VenturaDitching the defectThe word ‘Defect’ no longer appears in any of VALID’s Tree Risk-Benefit Management Strategies. Even though it was there in the qualified form of ‘Obvious Tree Defects’, the tree defect issue has been knocking at the door of reasonable, proportionate, and reasonably practicable tree risk-benefit management for a while now. The volume … Read More