Intraseasonal and especially supra-annual population peaks may amplify small mammal attack rates to significant levels, with consequences for passerine
Finally, in a study of European passerines
, Moller (1986) found that polygynous species were not more often sexually dimorphic in plumage than monogamous species.
The general and body condition of psittacine and passerine
birds were compared by the Mann-Whitney U test for 2 X k ordered tables.
The present study is of importance for future epidemiological and ecological investigations and because of the implications of parasitism by this species among members of this family or even in other passerines
Time-specific variation in passerine
nest survival: new insights into old questions.
Phenological studies in Croatia were up to now restricted to the spring arrival of breeding passerines
(Dolenec, 2003; Kralj and Dolenec, 2008; Dolenec et al., 2009).
, in general, have difficulty in flying long distances, so the use of resources that are available throughout the year (e.g.
Temperature swings can be extreme and being subject to all the prevailing winds, the conditions can be particularly hostile for small passerines
[perching birds, including all songbirds].
Alden Miller stated that 315 passerine
bones had been recovered, but that only 169 were identifiable, of which he identified 94 (1932).
The gray catbird (Dumetella carolinensis), a migratory passerine
bird, is known to be infected with the blood parasite Plasmodium relictum.
Fortunately, a researcher at SUNY Albany who was using very light transmitters on small passerine
birds put DEC in contact with a telemetry manufacturer who modified the tiny transmitters for an aquatic environment.
Of four species of passerine
birds analyzed in detail by Brown et al.