BBRP Fall Nest Box Review

Photos by Terry Carr
Click on any photo to see large version
More photos on the DNCB Picasa site (Oct. 21 and Nov. 7, 2014).

On October 21, Roger and Terry opened 18 of our 31 nest boxes in Boundary Bay Regional Park.  On November 7, Roger, Mike and Terry opened the rest.  These nest boxes are for Tree Swallows and Chickadees.

Roger & Mike battling blackberries

Roger & Mike battling blackberries

The boxes were more successful this year because fewer had baffles to keep non-native House Sparrows out.  We thought they may be keeping Tree Swallows out as well.

Box 30, near Cammidge House, had a double nest – Chickadee on the bottom (with unhatched eggs and a dead chick) and House Sparrow on top.

Double nest - Chickadee bottom, Sparrow top

Double nest – Chickadee bottom, Sparrow top

Nests separated (Chickadee & Sparrow)

Nests separated (Chickadee & Sparrow)

Chickadee nests are made mostly of moss.  House Sparrow nests are very large, with lots of grass and some feathers.  Tree Swallow nests are thinner, with grass and feathers.

Box 13 was not found, and may be on the ground.  One box had a small rat nesting in it and we decided to let it stay for the winter.

Besides the double nest, there were 4 Tree Swallow nests and 11 House Sparrow nests.  13 boxes were empty.

In 2012, 15 boxes were occupied – 2 Swallow, 9 Sparrow, 2 Chickadee & 2 double (Swallow/Sparrow)

In 2013, 6 boxes were occupied – 2 Swallow, 3 Sparrow, 1 Chickadee & 25 empty

In 2014, 16 boxes were occupied – 4 Swallow, 11 Sparrow, 1 double Chickadee/Sparrow, 13 empty & 2 unknown
Terry Carr

About dncb

DNS: Delta Naturalists are a group of nature lovers whose aim is to foster interest in the natural history of the Fraser delta by sharing and enjoying nature and promoting environmental awareness and conservation. DNCB: Delta Nats Casual Birders is a group of Casual Birders who go Birding at different locations each week, usually within the Lower Mainland or in nearby Washington State.
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