McGILL BIRD OBSERVATORY

SPRING MIGRATION MONITORING PROGRAM

Week 1:  March 28 - April 3, 2013

Welcome to the McGill Bird Observatory weekly report.  Click here for a complete listing of our archives.
Comments or questions are welcome at "mbo AT migrationresearch.org".

PICTURE OF THE WEEK:


Mallard
It's spring again at MBO - and this Mallard is one of the many birds already returning
or passing through on the way to destinations farther north.
(Photo by Simon Duval)

 

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THIS WEEK

THIS SPRING

2013 TOTAL

SITE TOTAL

# birds (and species) banded

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368 (13)

41880 (111)

# birds (and species) repeat

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71 (7)

8052 (70)

# birds (and species) return

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32 (11)

1241 (38)

# species observed

35

35

48

207

# net hours

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55.0

69344.7

# birds banded / 100 net hours

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669.1

60.4

Note: table does not include nocturnal banding (owls)

Banders-in-charge:  Gay Gruner
Censusers: 
Marc Boisvert, Jean Demers, Frédéric Hareau, Lisa Keelty, Barbara MacDuff, Don MacDuff, Betsy McFarlane, Clémence Soulard

Notes:  After a busy end to the winter monitoring program, thanks largely to the record influx of redpolls, the start of the official spring migration monitoring program (our ninth consecutive year!) actually provides an opportunity for a bit of a breather.  Although census will be taking place daily throughout the ten weeks of the spring program, banding will as usual not kick off until the start of the fourth week (April 18), since it is often too cold in the early weeks to band safely and achieve any consistency in effort and results from year to year.  This week's 35 species observed during census matched the total from the same period last spring.  Highlights of the week included American Woodcock, Great Black-backed Gull, and Bohemian Waxwing.

This week’s top 10  

# individuals banded

mean # individuals observed daily

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1.  Canada Goose (297)

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2.  Red-winged Blackbird (37)

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3.  Common Redpoll (23)

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4.  Black-capped Chickadee (11)

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5.  Ring-billed Gull (7)

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6.  Greater Snow Goose (7)

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7.  American Crow (7)

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8.  Northern Cardinal (6)

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9.  Blue Jay (5)

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9.  European Starling (5)

The top two species to kick off this spring were no surprise - and in fact, their numbers were very similar to last year, when there was a daily mean of 298 Canada Geese (compared to 297 this year) and 42 Red-winged Blackbirds (37 this year).  On the contrary, a key difference this spring was the number of lingering Common Redpolls, enough to claim third place for the week. The remainder of the top ten includes typically modest counts for this time of year of early migrants (Ring-billed Gull, Greater Snow Goose) and residents (Black-capped Chickadee, American Crow, Northern Cardinal, Blue Jay, and European Starling).

Song Sparrow
One of MBO's faithful Song Sparrows (banded in a previous year) back for another summer.
(Photos by Simon Duval)

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2002- The Migration Research Foundation Inc.