. The Canadian field-naturalist. 1964 Keith: Territoriality Among Snowy Owls 19. Figure 1. Extricating the feet of a large female Snowy Owl from the nylon nooses of a bal-chatri. yards, and both clashed heavily about fifty feet above the ice. It was almost dark by this time, aiid neither bird was seen again that day. The second owl seemed to have been the aggressor. (3) February 11: A trap was set near Dark Umnarked just at dusk. She flew to it almost immediately, but shortly afterwards rose quickly to meet another Snowy Owl which approached from the direction of All Blue's territory (it was t
. The Canadian field-naturalist. 1964 Keith: Territoriality Among Snowy Owls 19. Figure 1. Extricating the feet of a large female Snowy Owl from the nylon nooses of a bal-chatri. yards, and both clashed heavily about fifty feet above the ice. It was almost dark by this time, aiid neither bird was seen again that day. The second owl seemed to have been the aggressor. (3) February 11: A trap was set near Dark Umnarked just at dusk. She flew to it almost immediately, but shortly afterwards rose quickly to meet another Snowy Owl which approached from the direction of All Blue's territory (it was too dark to identify colour markings). About five minutes of aerial gymnastics ensued, during which these two birds clashed again and again in mid-air. One of the owls then returned to the trap. (4) February 11: At about 9 Light Unfnarked and Orange Right Wing (both males) were noted sitting on the ice approximately 250 yards apart, but hidden from each other's view by emergent vegetation. As we were watching, a cottontail rabbit, Sylvilagus florid anus, suddenly appeared and was seen by Light Untnarked, which flew after it. Orange Right Wing apparently saw Light Unmarked and commenced to chase him for about two minutes. Both owls then settled down in roughly their initial positions. (Unbeknown to us the rabbit had just been released by H. A. Mathiak when we and the owls saw it.). Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Ottawa Field-Naturalists' Club. Ottawa, Ottawa Field-Naturalists' Club
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