McGILL BIRD OBSERVATORY

BREEDING BIRD MONITORING

June 4 - 30, 2005

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

PICTURE OF THE MONTH:


A variety of butterfly species were observed at MBO in June, with this Baltimore
Checkerspot standing out as the rarest of them all, and also one of the most
striking in appearance.  (Photo by Marie-Anne Hudson)

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  THIS MONTH SUMMER TOTAL YEAR TOTAL SITE TOTAL
# birds (and species) banded 1 (1) 1 (1) 710 (66) 1631 (78)
# birds (and species) repeat -- -- 243 (18) 421 (28)
# birds (and species) return -- -- 29 (6) 31 (7)
# species observed 64 64 137 155
# net hours 0 0 1620.9 2595.4
# birds banded / net hour -- -- 44.0 62.8

Note: table does not include nocturnal banding (owls)

Bander-in-charge:  Marcel Gahbauer
Assistants:  Gay Gruner, Marie-Anne Hudson, Chris Murphy, Jen Pearson, Mike Ross, Jen Tyler

Notes:  For the month of June we shut down the nets and simply monitored the birds present in the area.  The standard census was done twice a week for most of the month, and supplementary observations were made during additional visits.  Of the 64 species observed during the month, the majority of have been seen repeatedly and are likely breeding on site.  Highlights among these include Green Heron, Veery, American Redstart, Indigo Bunting, and 5 species of woodpecker.

The Tree Swallow boxes were checked periodically, and the first hatchlings (17 of them in four boxes!) were discovered on June 10.  At that time another 25 eggs remained in other boxes, so the population is likely to grow much further still.  Nests of several other species have been found, including Red-winged Blackbird, Yellow Warbler, Gray Catbird, Eastern Phoebe, Rose-breasted Grosbeak, Baltimore Oriole, and Song Sparrow.  An abandoned Pied-billed Grebe nest with scattered eggshells was also discovered, but it was not clear whether they had nested successfully or been the victim of predation.

In early July we will resume banding on an occasional basis, hopefully catching some of the recent fledglings so that we'll be able to recognize them if they return to MBO next spring.


One of the many nests at MBO being monitored as part of a PhD research project
on nest productivity.  There are three Red-winged Blackbirds in this photo - the two
with open beaks are roughly 3 and 4 days old, and are sitting on top of another
3-day-old sibling.  (Photo by Marie-Anne Hudson)

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