I Heard It Through The Vine: Butterflies on Mount Sutro
By Liam O’Brien
People always come to a butterfly walk slightly fearful. I find this strange considering how much joy these bugs seem to give us all. But it is true primarily because many aren’t sure of their butterfly species and the butterflies fly around so damn fast how could anyone really identify them? (Fascinatingly enough this is how I feel on a bird walk.) The group always seems to be in awe when I throw out the known factoid that if one sticks to it long enough, and gives themselves many years to get it wrong, a person can not only identify a butterfly on the wing but they’ll be able to tell it’s sex then as well. I try to reassure a group before the walk that everyone can add to the day with their own set of eyes. ” If you see one flying that way and the group is looking the other way say, ‘There’s one!’ and everyone will look that way and hopefully I can identify it. But an interesting thing happened this season: it turns out I don’t really even need to be there.
On the morning of April 7th, 2022 Kelly Dodge, an employee of the Sutro Stewards was leading a group of volunteers up to the summit of Sutro. The following is an excerpt from an email Kelly recently sent me: ” We were at the large, main meadow right off from where the pavement ends from Nike Road. I saw a black and blue (this becomes important – the blue part) butterfly drop down from high above and into the meadow, it then flew towards the North Ridge Trailhead at the summit. Unfortunately it was moving too fast ( second clue ) to get a photo. On the same day Morgan told me he saw a Pipevine Swallowtail down by the Surge Lot around 1 p.m. Same individual?” The lawyer in me knew immediately we had a strong circumstantial case.
Male Pipeline Swallowtail, (note the gunmetal blue on hindwing) by Liam O’Brien
In another email Ildyko Polony, the Executive Director of the Sutro Stewards, wrote: ” I saw at least one after Kelly’s flying around sometime in the late spring/early summer. It may have been more than one individual. It was up at the summit. Bridget and I were sitting and I saw this butterfly flying in and out of the acacia thicket and in the fenced off area where the silvery lupine grows.…

Female Greater Sage-Grouse, winner of the 2022 “Female Bird” category
Pop-up blind in Greater Sage-Grouse country. Photo is from a different day and location
People board a bus for the trip to the Least Tern colony at Alameda Wildlife Reserve on June 25, 2022 by Rick Lewis
San Francisco is impressive even in the haze when seen from the northwest corner of the Reserve in Alameda by Rick Lewis
