10.1371/journal.pone.0115143.g003
Pär Söderquist
Pär
Söderquist
Joanna Norrström
Joanna
Norrström
Johan Elmberg
Johan
Elmberg
Matthieu Guillemain
Matthieu
Guillemain
Gunnar Gunnarsson
Gunnar
Gunnarsson
Measurement of bill length.
Public Library of Science
2014
bill morphology
Farmed mallards
fitness consequences
hunting purposes
study system
anthropogenic impact
Wild populations
Wild Mallards
mallard population
anthropogenic influence
bill lamellae
2014-12-16 02:48:25
Figure
https://plos.figshare.com/articles/figure/_Measurement_of_bill_length_/1272395
<p>Bill length was measured (to nearest 0.01 millimeter) along the dorsal side of the maxilla using a caliper. Photograph: Pär Söderquist.</p>