Migration Monitoring at TTPBRS: June 3-9, 2008

Polyphemus Moth (Seabrooke Leckie)

The Spring 2008 Migration Monitoring season has come to an end after a muggy and buggy final week with very few migrants sampled. We have closed the season with just under 1900 birds banded and 189 species observed. The mark of 189 species is exceptional, 11 species more than the previous record high season for diversity (2007). This is likely to be a function of increased available time for casual observations due to the record low abundance sampled in the mist nets. This is one of the reasons why TTPBRS is careful to record both standard and non-standard data sets to limit variables and facilitate analysis.

The final week was all about nesting birds with the frenzied activity of the many Yellow Warblers, Gray Catbirds, Warbling Vireos, Eastern Kingbirds and Baltimore Orioles that call TTPBRS home. A few migrants were found on June 3, which included a Green Heron and a Myrtle Warbler. A total of 16 birds were banded for the morning of June 5, which included a couple of Yellow-bellied Flycatchers and a female Black-throated Blue Warbler. June 6 was noticeably more active with flycatchers as 4 Great Crested and the season's first Olive-sided Flycatcher were tallied. Also of note on this day was the banding of a record late White-throated Sparrow. Fifteen mist nets ran for 6 hours on June 7, which yielded just 6 birds, the highlight of which was a Veery. Common Loons were observed quietly passing overhead on a daily basis throughout the week and numbers of arctic-bound Canada Geese peaked at 105 on June 7.

So there you have it, spring season number 6 is in the books (soon to be in the computer!). With each passing year and each milestone reached, it becomes more and more apparent how vital the support from the community is for the Tommy Thompson Park Bird Research Station. A big thank you to all of the steadfast volunteers and the donors and partners for the study and protection of birds in Toronto!


June 3
1-Common Loon
1-Green Heron
1-Myrtle Warbler
1-Orchard Oriole

June 5
3-Yellow-bellied Flycatcher
1-Black-throated Blue Warbler
8-Blackpoll Warbler

June 6
1-Common Loon
7-Semipalmated Plover
1-Olive-sided Flycatcher
4-Great Crested Flycatcher
1-Myrtle Warbler
1-White-throated Sparrow

June 7
2-Common Loon
105-Canada Goose
1-Purple Martin

Birds Banded: April 1-June 9

Species Recorded: April 1-June 9