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To facilitate and promote consistency in data collection and the
interpretation of nest results, MWDI provides forms to establish
project site box profiles and to monitor & analyze results.
Nest Box Profile Form
The
Nest
Box Profile Form spreadsheet provide a way to develop a
numbering sequence, by area and by the basic box facts:
The form also includes many other qualitative items such as
access issues (hip boots, chest wader, boat, ladder
requirements, tide issues - by box as needed, projected repair
scenario, predator issues, distance between boxes and other
things to watch for.
The box placement category "Visibly Isolated" is somewhat
subjective but it does provide an important piece of information
on which nest results often hinge. If a box is visibly isolated,
i.e. well hidden, it may relate to future nest dumping and/or
usability factors.
Nest Inspection Form
The
Nest Box Field Inspection Form
and the Example of
Nest Inspection
Detailed Analysis should be relatively
self-explanatory.
Note: For one-time or final nest inspections, certain
information is not needed. However, information about nest type
(Normal or Dump) and Nest Cover (None, Nest Material, Down) are
very important diagnostics to record as final and chronological
nest progress indicators.
For example, nest abandonment analysis is facilitated if nest
progression is known and the number of eggs left behind or how
they look when destroyed is described. Consider the following
examples:
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If
down is left in a bowl-like shape not covering all eggs (with
duck poop on them), this is very telling! It means the hen
was scared off the nest and never returned.
-
A
normal nest (15 eggs or less) with down covering all eggs,
but abandoned, is an indicator that the hen may have been
killed while away from the nest, as everything left behind
was in good order.
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A
nest with down and all eggs hatched or with membranes
strongly suggests snake predation, as the hen got to the
incubation stage (e.g.. the down covering) but the snake ate
them all and left.
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A
dump nest with no egg covering strongly suggests nest strife
as an abandonment reason, especially if several eggs are
cracked and/or yolk is spread around the box.
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A
nest with 1-3 eggs and no cover strongly suggest a "drop"
nest, one which the hen(s) never intended to incubate but
perhaps wanted to hedge their productivity risk by leaving
an egg or two for another hen to take over.
Please download Field Inspection and Nest Box
Profile forms from the links below. These forms are provided in
Microsoft Excel format and are set up to be printed at 8.5" x
11" (letter).
We
are routinely revising these forms to make them more
user-friendly and relevant. Hopefully, this will simplify your
own personalized forms development. If you have suggestions for
improvement or any questions regarding the use of the forms
or how to submit completed forms, please let me know via email: Cliff Brown at
Cliftonabrown@aol.com.
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