Daniel J. Field:
Brown Creeper (Certhia canadensis) with tick, South Fork, Arizona
Daniel J. Field:
Eurasian Treecreeper (Certhia familiaris), University of Bath, Somerset, United Kingdom
Daniel J. Field:
Eurasian Treecreeper (Certhia familiaris), University of Bath, Somerset, United Kingdom
Daniel J. Field:
Brown Creeper (Certhia americana), Delta, British Columbia, Canada
Daniel J. Field:
Eurasian Treecreeper (Certhia communis), Fairhaven, Norfolk, United Kingdom