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6/13/2007

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MAPS Visit 1, June 10, 2007

Wood Thrush (TRCA-Seabrooke Leckie)

The second year of the Monitoring Avian Productivity and Survivorship (MAPS) program at Claireville Conservation Area got underway on June 10. The MAPS program is a continental initiative to monitor vital rates (productivity and survivorship) of breeding landbirds. Calculations of vital rates are then used to determine the causes of population trends at local, regional and continental scales. Our site at Claireville is one of just a handful in Ontario and we are excited to learn about the demographics of local bird populations in relation to urban conditions and as a means of measuring habitat quality.

We were hoping to see returning Wood Thrushes, American Redstarts and Rose-breasted Grosbeaks and we were not disappointed. A total of 37 birds were captured and activity in the area was high with great diversity including Black-billed and Yellow-billed Cuckoo, Scarlet Tanager, Orchard Oriole and Northern Mockingbird. On the first visit a year ago we captured 50 birds, so the nets were less productive this year but it seemed that there were more birds around. We will be back for visit 2 next week. (summary of captures and pictorial highlights below)

Banded
1-Traill's Flycatcher
1-American Redstart
3-Black-capped Chickadee
4-American Goldfinch
1-Yellow Warbler
1-Savannah Sparrow
7-Song Sparrow
1-Northern Cardinal
8-Gray Catbird
1-Rose-breasted Grosbeak

Recaptured
1-Wood Thrush
1-Gray Catbird
1-Rose-breasted Grosbeak
2-American Redstart
1-Black-capped Chickadee
1-Northern Cardinal
1-Song Sparrow

Ebony Jewelwings are very common along the meandering rivers and creeks (TRCA-Seabrooke Leckie).

This is the first Savannah Sparrow we have banded during MAPS at Claireville. The species is very common in the surrounding grasslands along with Bobolinks. Upland Sandpiper, Clay-colored Sparrow and Grasshopper sparrow are uncommon breeders in the meadows (TRCA-Seabrooke Leckie) .

One of four creek crossings during a net round! (TRCA)

A returning American Redstart from 2006 captured in net 2. (TRCA)