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Hello all,
I apologize for the simple question, but I'm hoping I can ask you all for some help on calculating nest age for nest survival analysis in rMark. I have FirstFound, LastPresent, and LastChecked below for a few examples of nests in my data below:

FirstFound
11
12
8
1

LastPresent
19
18
22
24

LastChecked
22
24
25
27

The nocc is 58... from what I understand, I have to know the age of the nest first, but I'm confused about how to find this. Is it based on the "FirstFound" value?

Please let me know if there is any other info I need to calculate nest age, and thank you so much for your time!

Chapter 17 (http://www.phidot.org/software/mark/docs/book/pdf/chap17.pdf) of the Gentle Introduction to MARK provides information on this topic. See pages 17-5 and 17-14 for specific examples and information.

Thanks so much!

NestAge is calculated by RMark from AgeDay1 so you can use it directly. See ?mallard