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Ed Kroc

@edkroc.bsky.social

583 followers 217 following 97 posts

Statistician, gull lover. At UBC, Vancouver, Canada. I like math, statistics, science, and seabirds. Blog: edkroc.wordpress.com Salish Sea Urban Gull Monitoring Program: ekroc.weebly.com/salish-sea-urban-g…

Posts Replies Media

Ed Kroc @edkroc.bsky.social · 17/07/2025

Look to the rooftops.

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Ed Kroc @edkroc.bsky.social · 14/07/2025

Lots of little gull floofs at the Tsawwassen ferry terminal this morning.

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Ed Kroc @edkroc.bsky.social · 10/07/2025

Building height continues to be the strongest predictor of nesting propensity for GWGUs.

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Ed Kroc @edkroc.bsky.social · 10/07/2025

Hello, Sechelt. There are two rooftop GW Gull nests in this picture. Can you guess where? Answer below.

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Ed Kroc @edkroc.bsky.social · 11/01/2025

#saturdaylaridae From July 2023, a Western Gull nest atop one of the many boats docked in Mission Bay, San Diego. Clearly, this boat hadn't been used by humans for awhile.

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Ed Kroc @edkroc.bsky.social · 05/01/2025

Documented this pair nesting successfully here in 2019, 2023, and 2024. Presumably they return every year. Look at that healthy chick!

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Ed Kroc @edkroc.bsky.social · 05/01/2025

#saturdaylaridae An interesting Western Gull nest in downtown Monterey, CA, from July 2023. It's on a narrow ledge above this second floor window above a downtown street. Such a small and precarious nest site is atypical of urban Westerns, much more typical of Glaucous-wingeds north in WA and BC.

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Ed Kroc @edkroc.bsky.social · 29/12/2024

#saturdaylaridae Goodbye 2024.

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Ed Kroc @edkroc.bsky.social · 13/12/2024

Moving offices and sifting through the stacks of papers I printed out to read as a postdoc and ECR. Is this a statement on the use of propensity scores for causal inference? Yes, it is.

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Ed Kroc @edkroc.bsky.social · 13/12/2024

New office. The rest is a mess right now, but the desk area is looking good.

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Ed Kroc @edkroc.bsky.social · 07/12/2024

#saturdaylaridae In Vancouver, December is the earliest we will see some Glaucous-winged Gull pairs return to their nest sites, more than 5 months before any eggs are actually laid.

A Glaucous-winged Gull pair at their nest in Vancouver in December.

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Ed Kroc @edkroc.bsky.social · 05/12/2024

Urban-nesting gulls! How and why they use the urban environment to live and reproduce.

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Ed Kroc @edkroc.bsky.social · 23/11/2024

A Glaucous-winged Gull down by the river for this #saturdaylaridae.

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Ed Kroc @edkroc.bsky.social · 17/11/2024

I'm bringing back the proud tradition of #saturdaylaridae. I started this tag on IG about a decade ago and I plan to resurrect it here. Here's a peak winter plumage Glaucous-winged Gull, Vancouver, BC.

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Ed Kroc @edkroc.bsky.social · 16/11/2024

A pretty awesome moon dog tonight.

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