Bird Ecology and Conservation A Handbook of Techniques

Some thought needs to be given to surveying birds that are non-territorial, semi- colonial species, those that sing for brief pe ...

concept in wildlife surveys and we neglect it at our peril. Thus, comparison of “unadjusted counts” will only be valid if the nu ...

recorded (for cryptic and shy species this may not be true), and that birds do not move in response to the observer prior to det ...

to land after dark, and burrows may be occupied by more than one pair, or they may be unoccupied. It is possible to assess wheth ...

at particular stages of the tide, for example, at high tide roosts, than when more dispersed over a larger area. Photography is ...

Estimation of the numbers of smaller nocturnal migrants is particularly difficult, but considerable progress has been made in th ...

addition to information on bird movements. Chapter 5 covers these issues in detail. The principle behind standard effort capture ...

to go into these methods, a range of approaches is available. The simplest of these, which is known as the Lincoln index (or Pet ...

above the ground using pulleys or telescopic poles. Because some dense habitats, such as scrub and reed bed, can be successional ...

Shearwater Puffinus puffinus burrows. Detailed observations on incubating birds showed that this was because males and females s ...

An advantage of this method is that it is non-intrusive, which might be particularly useful in studying rare and endangered spec ...

Bibby, C.J., Burgess, N.D., Hill, D.A., and Mustoe, S.H. (2000). Bird Census Techniques, 2nd ed. Academic Press, London. BirdLif ...

Lor S., Malecki, R.A. (2002). Call-response surveys to monitor marsh bird population trends. Wildlife Soc. Bull., 30, 1195–1201. ...

Thompson, W. L. (2002). Towards reliable bird surveys: accounting for individuals present but not detected. The Auk 119:18–25. W ...

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3. Breeding biology Rhys E. Green 3.1 Introduction Collecting information on breeding biology and performance is an important pa ...

3.2 Choosing study areas Where will you carry out your study? For a small population of a rare, threatened species there may be ...

causes of failure. Cold searching, that is searching visually for nests in all poten- tial nesting habitat in the study area, is ...

For species that are secretive and conceal themselves in vegetation, another possible solution to finding an unbiased sample of ...

initial weight during incubation, mainly because of water loss (Ar and Rahn 1980). If eggs are weighed and their length and maxi ...