Purple Martin Update, Volumes 5-8Purple Martin Conservation Association, 1994 - Purple martin |
From inside the book
Results 1-3 of 84
Page 7
... insect is indigestible , the number of insects they destroy in order to get sufficient nourishment is ' not only beyond calculation , but almost beyond comprehension . ' The food is often compressed into a hard mass , so it is wonderful ...
... insect is indigestible , the number of insects they destroy in order to get sufficient nourishment is ' not only beyond calculation , but almost beyond comprehension . ' The food is often compressed into a hard mass , so it is wonderful ...
Page 26
... insects , the search is on for natural and less disruptive means to perform this task . Long - lived , broad- spectrum chemicals reduce biological diversity , the more sensi- tive insect predators and parasites disappear , and , to add ...
... insects , the search is on for natural and less disruptive means to perform this task . Long - lived , broad- spectrum chemicals reduce biological diversity , the more sensi- tive insect predators and parasites disappear , and , to add ...
Page 25
... insects at approximately the same height as were the Purple Martins . To further substantiate that insects were active at that level , we left our vehicle and walked around in the mowed areas and observed leafhop- pers and other small ...
... insects at approximately the same height as were the Purple Martins . To further substantiate that insects were active at that level , we left our vehicle and walked around in the mowed areas and observed leafhop- pers and other small ...
Contents
The Purple Martin Conservation Association is affiliated with the Edinboro University of Pennsylvania | |
How to Enlarge the Compartments in Aluminum | 17 |
New from the PMCA | 20 |
Copyright | |
3 other sections not shown
Other editions - View all
Common terms and phrases
aluminum houses April Association Edinboro University attract martins babies Bahama Swallow banded Barn Swallows birds blowfly bluebirds breeding cavities clutch colony sites Conservation Association Edinboro dawnsong tape Edinboro University Editorial eggs eggshells entrance holes European Starlings feeding female fledged gourd rack hatched Hill House Sparrows insects James July June Lake male martin martin colony Martin Conservation Association martin house martin landlords martin roost mealworms ment Mississippi Kite natural gourds nest boxes nest checks nest material nesting attempt nestlings pairs of martins parasites parents perch pipe PMCA PMCA's pole pole guards porch dividers predators problem Progne subis Project Martinwatch Purple Martin Conservation Purple Martin Update season snakes species spring starling-proof starlings subadult success summer tins tion trap Tree Swallows Trio University of Pennsylvania weather Wildlife winter wooden houses yard young fledged