The Mysterious Deaths of four Waxwings
Ranger Andy's Observations on the recent irruption
As a ranger, I've had the privilege of witnessing many remarkable natural phenomena, but the Waxwing winter of 2023 stands out as a particularly good irruption.
What does that mean? An "irruption" ? In ornithology this refers to a sudden, irregular migration of large numbers of birds to areas where they are not typically found in such large numbers. This years waxwing irruption appears to be the largest in over a decade, and it's been both a wonder to observe and a reminder of the intricate balance of nature.
The Arrival of the Waxwings in Northern Scotland
These beautiful, plump birds, slightly smaller than Starlings, with their striking crest and vivid reddish-brown, black, yellow, and white plumage, have always fascinated me. Waxwings are not native to the UK but visit in winter. What's unique about this year is the sheer number of them here in the Highlands, this irruption has occurred because their native habitats in Scandinavia and Russia can no longer support their population this year.
A Haven in Urban Spaces
One of the most interesting aspects of this phenomenon is how these birds adapt to urban and suburban environments. They're drawn to areas with an abundance of rowan and hawthorn berries. Gardens, industrial estates, and town centres have therefore become unlikely havens for these visitors, providing both food and a rare spectacle for people.
A Sobering Discovery
During this irruption, I received a call from a resident living near the coast, concerned about finding four dead birds in her garden. Initially, there was confusion about the birds' identity, but it was soon clear they were Waxwings. Investigating the site, I found an old crab apple tree in the garden, surrounded by fallen, fermenting apples. It was a poignant reminder of the struggles these birds face.
This incident brought to light the challenges Waxwings encounter during irruptions. With their usual food sources depleted, they are often forced to resort to less ideal options like fermenting fruit. While Waxwings are equipped to handle this to some extent, thanks to their large livers, the risk of intoxication is always present. It's uncertain whether the fermented fruit was the cause of death for these birds, but it highlighted the need for us to leave berries and rosehips on bushes for the birds as a good winter source of food.
Nature as a reflection of environmental fluctuations
As a ranger, I'm used to seeing the ebb and flow of wildlife populations, but the Waxwing winter of 2023 has been a special experience. It's a reminder of how migration and animal behaviour are influenced by environmental factors and how even small changes can have significant impacts. Observing these birds, assisting in situations like the one with the dead Waxwings, and educating the public about these visitors is an integral part of my work this season.
This Waxwing winter has been a mixture of awe and learning. As we continue to witness these birds in our towns and gardens, hanging on to trees in the wind as they chatter away, we're reminded of the ever-changing dynamics of nature and the importance of understanding and supporting our wildlife.
Have you seen any Waxwings passing through your neighbourhood this year?
Andy Summers, North Highland's Senior Ranger for High Life Highland, is a dedicated naturalist with a deep understanding of the region's diverse ecosystems. His extensive experience in wildlife conservation and passion for preserving North Highland's pristine landscapes make him a vital asset. Andy's work encompasses wildlife observation, environmental education, and passing on a greater appreciation for the area's unique flora and fauna. His commitment to conserving North Highland's natural heritage is evident in his expertise and unwavering dedication.