Trammels are the horizontal lines woven in intervals on a sheet of mesh to create shelves or pockets
24mm mesh is ideal for very small birds such as hummingbirds
They have an opening pin and two holes for closing (0A-0 first hole
Columbidae
Motacillidae
Identification Guide to North American Birds, Part I by Peter Pyle, 2nd EDITION 61mm Trammels are the horizontal linesWe are pleased to offer the new edition of the fabulous Identification Guide to North American Birds, Part I, by Peter Pyle! Part I: Columbidae to Ploceidae by Peter Pyle: A highly technical guide for researchers, used for birds in hand, which includes data for 395 species and 857 subspecies. The data includes plumage, molt patterns, measurements (wing, tail, bill, tarsus, mass), sexing, and ageing information. Families included: Columbidae,