The Mysterious Case of the Disappearing Wood Thrush

This summer we have had many unusually hot days, and with the heat comes the memory of another very hot summer day when we filmed with Dr. Lyle Friesen and Dinuka Gunaratne in Waterloo, Ontario.

Dr. Lyle Friesen (formerly with Environment Canada) has been studying Wood Thrush in the region of Waterloo since 1996.  These songbirds are in serious decline, but without clear answers as to why this was happening, Lyle knew he had a mystery to solve.

“Since 1970 the population of Wood Thrush in Canada has declined by 85%, that’s just an astonishing number.”

Screen Shot 2016-07-15 at 6.09.14 PM

 

Our day of filming started with a lucky shot of a Wood Thrush on her nest. We were hoping to capture behavior so we patiently filmed this shot for a long time, waiting for this songbird to forage,  wiggle, eat or sing — any action for the camera! However we ended up in a stand-off.

 

The Wood Thrush knew we were there and simply froze. The only movement we could see was the occasional blink of an eye. She seemed to believe that if she stayed absolutely still we would not see her. This was likely a tactic to defend her nest, which apparently is serious business for a Wood Thrush.

“We found and monitored almost 900 nests and about half of the nests fall prey to predators, yet we’ve never seen a predator at a wood thrush nest.”

Lyle and his team set up a series of infra red camera’s and installed ‘nest cams’ at the nests. Over the course of several years, Dr. Lyle Friesen documented an amazing night-time woodland drama.

lyle comp shot

Screen Shot 2016-07-15 at 6.10.22 PM

 

 

We created a short video documenting the process of Lyle’s research. This video features amazing footage that reveals who the mysterious predator is, as well as their modus operandi.  watch: https://youtu.be/i57Mou6HiEE8

 

What we learn from Lyle’s work is that the world is becoming a less friendly place for Wood Thrush. Predation in itself is a natural phenomenon, but in this case the reasons behind its dramatic increase are anthropogenic. Humans have modified the landscape and upset natures balance — with devastating consequence for Wood Thrush.

 

FLAP recovers three species at risk from bird collisions

Fatal Light Awareness Program (FLAP) just released a sobering news release about three federally listed species at risk that they have recovered from building collisions in Toronto. We’ve written about FLAP on our blog before, they’re an incredible group of volunteers committed to advocacy and rescue work surrounding bird collisions with buildings.

If you’re in Toronto’s financial district in the very early morning of spring or fall, you may spot someone scurrying along the sidewalk carrying paper bags and a butterfly net. That’s a FLAP volunteer, scanning the street for a stunned bird that they can rescue or a dead one they can lay to rest.

So far this spring, those volunteers have recovered a live Red-Headed Woodpecker, a dead Golden-winged Warbler and one live and six dead Wood Thrushes. All these birds are protected under the federal Species at Risk Act and we can’t afford to lose anymore of them.

Last year, we filmed with Keith Pardiek at the Breeding Bird Survey, a joint American-Canadian songbird population-monitoring program. While there, he shared some distressing statistics with us: since 1966 Wood Thrush populations have declined 62%, Red-Headed woodpecker 70% and Golden-winged Warbler 70%.

“These birds play a vital ecological role,” said Michael Mesure, Executive Director of FLAP, “There are many commercially available, aesthetically pleasing solutions that can help to reduce bird collisions with buildings. Urban structures can be made safe for birds.”

We have filmed with FLAP several times over the course of shooting our documentary. The footage is inspiring and we can’t wait to share it with you. The story isn’t all doom and gloom either; there are reasons to be hopeful. FLAP’s advocacy work has led to some especially deadly buildings to be treated with bird-friendly window decals.

The same day FLAP published this news release, The New York Times published a feature about a large-scale research collaboration with New York City Audubon, the American Bird Conservation and Fordham University focused on various types of glass and their ability to deter birds. The goal of the project is to help conservationists and ornithologists understand and prevent this needless carnage.

FLAP Canada is asking anyone who finds a bird that has collided with a building to report the incident on FLAP Mapper – a live web tool that they have developed. Users can easily report a collision on an interactive map, as well as view locations of others.