Re: [unmarked] Digest for unmarked@googlegroups.com - 1 update in 1 topic

[Thomas McLaren]

Hi Andy,

Thanks for the reply.  I'm actually running this analysis as a Bayesian model in JAGS and just using formatdistdata() to help with the setup. So it's possible we could expand the model to account for grouping in the abundance and observation processes.  I'll have to refer to ch 9 in AHM to familiarize myself more though.  I appreciate the suggestions!

On Thu, Oct 23, 2025 at 10:47 PM <unma...@googlegroups.com> wrote:

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FormatDistData() question

Jeffrey Royle <jar...@gmail.com>: Oct 23 06:48PM -0400 hi Tom, I'm afraid formatDistData does not accommodate that situation. But more importantly, the models in unmarked DO NOT accommodate non-independent detections so you should be careful with that. Having group detections is complicated because you might have to model group-size dependent detection and _also_ imperfect counting of group size so more complex models are needed. There are some Bayesian analysis papers out there on that (including in the AHM1 book, chapter 9). Also of course Program Distance should handle these situations. regards andy     On Wed, Oct 22, 2025 at 1:24 PM 'Thomas McLaren' via unmarked <

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Tom McLaren

(he/him)

Biologist

Point Count Program

Klamath Bird Observatory

PO Box 758

(512) 921-3014

Ashland, Oregon, 97520